January Weather in Mount Vernon, United States

Last updated: February 24, 2025

January in Mount Vernon, United States, presents a distinctive winter experience characterized by a maximum temperature reaching 22°C (71°F), contrasting sharply with an average of 3°C (38°F) and a chill that can drop to a minimum of -14°C (7°F). This month is marked by a total precipitation of 61 mm (2.4 inches) spread across 7 days, contributing to the region's brisk, 84% humidity that lingers in the air. Whether you're bracing against the cold or enjoying the occasional milder spell, January showcases the dynamic weather that defines this time of year in Mount Vernon.

January Temperature in Mount Vernon

January in Mount Vernon, United States, showcases a striking contrast in temperatures, marking the heart of winter. With minimums plummeting to -14°C (7°F), the chill is palpable, yet the average temperature hovers around a brisk 3°C (38°F), hinting at the gradual lengthening of days. This month can see a surprising peak at 22°C (71°F), offering rare moments of warmth that might catch residents off guard. As January progresses, it sets the stage for a slow but steady rise in temperatures, bridging the cold intensity of winter toward the milder beginnings of spring in February and March, where average temperatures continue to inch upward. Such fluctuations not only emphasize the unpredictability of winter weather but also highlight the anticipation of seasonal change in Mount Vernon.

January Weather in Mount Vernon: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Mount Vernon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec374247576776817872634841
Data source: Temperature data for Mount Vernon generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Mount Vernon

In January, Mount Vernon experiences relatively light precipitation, with only 61 mm (2.4 in) falling over an average of 7 days. This sets the stage for a gradual increase in both the amount and frequency of rain as winter transitions into spring. By February, precipitation rises to 96 mm (3.8 in), occurring on 11 days, signaling the onset of wetter conditions. As spring unfolds, March and April see further increases, with 82 mm (3.2 in) and 102 mm (4.0 in) respectively, while the precipitation days peak at 11. This upward trend continues into the warmer months, with May reaching 121 mm (4.8 in) and June at 107 mm (4.2 in) as summer looms. July and August bring the highest totals, showcasing the region's propensity for significant rainfall, while the overall pattern indicates a shift towards drier conditions as fall approaches. This rhythm of precipitation illustrates Mount Vernon's dynamic climate, blending seasonal transitions with varying weather patterns.

January Precipitation Trends in Mount Vernon

The chart displays monthly precipitation patterns in Mount Vernon, with values for each month alongside January's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec619682102121108132146931057789
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Mount Vernon

In January, Mount Vernon experiences a high humidity level of 84%, setting the tone for a winter characterized by moisture-laden air. As the months progress into February and March, humidity remains relatively stable at 83%, before gradually declining to 81% in April. This trend continues into the warmer months, with a notable drop to 74% in July and 72% in August. However, the onset of fall brings a rise back to 75% in September, before peaking again at 85% in November and settling at 84% in December. Overall, January’s humidity reflects a consistent pattern of elevated moisture during winter, followed by a diminishing trend that culminates in seasonal fluctuations as the year progresses.

January Average Humidity in Mount Vernon

This chart illustrates the average monthly humidity levels in Mount Vernon, with January's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how January's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%83%81%78%79%74%72%75%81%85%84%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Mount Vernon

In January, Mount Vernon experiences a moderate UV Index of 3, suggesting that while sun exposure should be approached with caution, the risk of harm is lower compared to the upcoming months. With a burn time of 30 minutes, it's a good time to enjoy outdoor activities without significant risk of sunburn. As the month gives way to February, the UV Index rises slightly to 5, maintaining that moderate exposure level. This upward trend continues into the spring, with March peaking at a high UV Index of 7, indicating a shift towards more caution as burn times decrease. By April, both the UV Index and the need for protection surge, reaching 9 and marking the onset of very high exposure levels. This trend persists through the summer months, where UV levels peak at 10 from May to July, necessitating vigilant sun protection as burn times shorten to just 15 minutes. As we transition into fall, UV levels gradually decline, tapering back to 5 in November. Finally, December returns to a similar pattern to January, concluding the year with a moderate UV Index of 3. For more detailed UV forecasts throughout the year, visit Mount Vernon UV Index.

Maximum UV Index Levels in Mount Vernon for January

The chart shows the monthly maximum UV Index (UVI) for Mount Vernon in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098753
Data source: Mount Vernon January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

January Sunshine in Mount Vernon

In Mount Vernon, United States, January greets residents with 153 hours of sunlight, setting the stage for a gradual increase in brightness as winter fades into spring. As February approaches, sunlight rises to 180 hours, hinting at the vibrant days ahead. March and April continue this upward trend, each boasting 259 hours of luminous joy. By May, the sun shines even brighter with 286 hours, welcoming the long, sun-drenched days of summer. June and July peak at 331 and 357 hours respectively, marking the zenith of sunshine in the year. As summer wanes, August retains a generous 321 hours, before the days steadily shorten with September's 276 hours and further into fall. October and November follow suit, offering 249 and 226 hours, while December concludes the year with a cozy 190 hours, making room for the return of longer days in the new year. Overall, the pattern reveals a beautiful arc of increasing light, reaching a zenith in the heart of summer before gracefully transitioning back to winter's embrace.

Monthly Sunshine Duration in Mount Vernon: January Highlighted

The January sunshine duration represents the total number of hours Mount Vernon experiences direct sunlight during the month of January, excluding cloudy or obstructed periods. This chart compares the sunshine duration of January with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec153h180h259h259h286h331h357h321h276h249h226h190h
Data source: Mount Vernon January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Mount Vernon During January

In Mount Vernon, January ushers in a moderate 46% chance of sunny weather, making it a promising month for those hoping to bask in the sun's warm glow. While this likelihood shines brighter than February's 29%, it falls short compared to the sunnier months of March and November, which leap to 52% and 58%, respectively. Interestingly, January's chances are somewhat consistent with the surrounding months, showcasing a gentle trend where sun-drenched days gradually resurface as winter gives way to spring. As the year unfolds, the likelihood of sunny days fluctuates, but January serves as a pivotal midpoint, hinting at the brighter days ahead.

Percentage of Sunny Days in January in Mount Vernon

The chart illustrates the percentage of sunny days in Mount Vernon throughout the year, with January highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Mount Vernon experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec46%29%52%49%40%39%49%35%55%41%58%39%
Data source: Mount Vernon January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Mount Vernon in January

In Mount Vernon, United States, January brings about 9 hours of daylight, setting the stage for gradually lengthening days as winter transitions to spring. As February sweeps in, daylight increases to 10 hours, hinting at the promise of longer days ahead. By March, this trend accelerates, with daylight stretching to 11 hours, and the arrival of April marks a significant leap to 13 hours—a clear signal of the approaching warmth. May and June maintain this brightness with a consistent 14 hours of daylight, making it a delightful time for outdoor activities. As summer wanes into July and August, daylight starts to retreat, but gradually, leading to 13 hours in August. The descent continues through September and October, where daylight dips to 12 and 11 hours respectively, before returning to 10 hours in November and finishing off the year with 9 hours in December. This cycle illuminates the rhythmic dance of daylight throughout the year, reflectively highlighting the vibrant shifts of the seasons in Mount Vernon.

Average Daylight Hours in Mount Vernon for January

The chart illustrates the variation in daylight duration in Mount Vernon throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 47m10h 45m11h 58m13h 14m14h 18m14h 49m14h 32m13h 35m12h 23m11h 8m10h 2m9h 29m
Data source: Mount Vernon daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Mount Vernon

In January, Mount Vernon experiences an average wind speed of 2.9 m/s (7 mph), contributing to the crisp winter air that characterizes the month. This wind velocity is slightly lower than the average speeds recorded in the preceding months of February to April, which hover around 3.2 m/s (7 mph). A noticeable trend emerges as the year progresses; the wind speeds gradually decline through the summer months, reaching a low of 1.9 m/s (4 mph) in August. As autumn approaches, the winds pick up slightly again, leveling off between 2.5 m/s (6 mph) and 2.9 m/s (6 mph) in September through December. This pattern not only showcases the gentle fluctuations of the season but also adds a charming undertone to the vibrant panorama of Mount Vernon's yearly cycle.

Average January Wind Speed in Mount Vernon

The chart displays monthly wind speed patterns in Mount Vernon, with values for each month shown alongside January's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how January's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.9 m/s3.23.23.22.82.52.31.92.52.72.92.8
Data source: Mount Vernon January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Mount Vernon Compares to Other Months

The weather in Mount Vernon changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of January's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Mount Vernon and find detailed weather information for every month.

January and February alike experience cold temperatures, but February tends to be slightly milder on average, with temperatures averaging around 5°C (42°F) compared to January's 3°C (38°F). Both months have similar minimum temperatures of -14°C (7°F), but February's maximum can reach up to 27°C (81°F), making it warmer than January's 22°C (71°F). Additionally, February experiences more precipitation, totaling 96 mm (3.8 in) over 11 days, compared to January's 61 mm (2.4 in) over just 7 days. Humidity levels remain relatively constant, with January at 84% and February slightly lower at 83%. For more details on weather in February, you can visit Mount Vernon weather in February.

January and March exhibit notable differences in weather conditions. January experiences colder temperatures with a minimum of -14°C (7°F) and an average of 3°C (38°F), while March showcases a milder climate, with minimum temperatures around -6°C (22°F) and an average of 8°C (47°F). The maximum temperature in March can reach up to 29°C (84°F), significantly warmer than January's high of 22°C (71°F). Precipitation is slightly higher in March, totaling 82 mm (3.2 in) over 9 days, compared to January's 61 mm (2.4 in) over 7 days. Humidity remains relatively consistent, with January at 84% and March at 83%. For a more detailed look at the weather, you can check Mount Vernon weather in March.

January weather in Mount Vernon is characterized by colder temperatures, with a minimum of -14°C (7°F) and an average of 3°C (38°F), compared to the milder April temperatures that range from a minimum of -1°C (31°F) to an average of 14°C (58°F). While January has lower precipitation at 61 mm (2.4 in) over 7 days, April sees an increase in rainfall to 102 mm (4.0 in) across 11 days. Additionally, January tends to have higher humidity at 84%, whereas April maintains a slightly lower humidity of 81%. For a more detailed look at what to expect, visit Mount Vernon weather in April.

January and May present stark contrasts in weather patterns. In January, the temperatures range from a frigid minimum of -14°C (7°F) to an average of 3°C (38°F), with a maximum reaching 22°C (71°F). The month sees about 61 mm (2.4 in) of precipitation over approximately 7 days and experiences high humidity at 84%. In comparison, May boasts a much milder climate, with temperatures varying from a minimum of 3°C (37°F) to a comfortable average of 19°C (67°F) and maximums soaring to 35°C (95°F). Additionally, May receives more rainfall, totaling 121 mm (4.8 in) across 12 days, but with slightly lower humidity at 78%. For a more detailed overview of the weather in May, you can check Mount Vernon weather in May.

January and June in Mount Vernon present a stark contrast in weather conditions. January experiences a chilly temperature range, with nighttime lows dropping to -14°C (7°F), while daytime highs only reach around 3°C (38°F) on average. In contrast, June boasts a much warmer climate, with average highs of 24°C (76°F) and maximum temperatures soaring up to 37°C (98°F). Precipitation also varies between the two months, with January receiving 61 mm (2.4 in) over 7 days, while June sees a higher total of 107 mm (4.2 in) spread over 13 days. Despite this increase in rainfall, June maintains a lower humidity level of 79% compared to January’s 84%, highlighting the more temperate and pleasant conditions typical of summer. For more on June weather specifics in the region, check out Mount Vernon weather in June.

January and July present stark contrasts in weather conditions. In January, temperatures can plunge to a minimum of -14°C (7°F), with an average around 3°C (38°F) and a maximum reaching 22°C (71°F). The month is characterized by a high humidity of 84% and receives about 61 mm (2.4 in) of precipitation over roughly 7 days. In contrast, July boasts significantly warmer temperatures, with minimums typically around 16°C (61°F), average highs of 27°C (81°F), and peaks that can soar up to 38°C (102°F). This summer month has a lower humidity level of 74% but sees increased rainfall, totaling about 132 mm (5.2 in) across approximately 12 days. For more detailed information about the weather in July, visit Mount Vernon weather in July.

When comparing the weather in January and August, there is a stark contrast in temperature and precipitation. January sees a minimum temperature of -14°C (7°F) and an average of 3°C (38°F), while August boasts a significantly warmer minimum of 15°C (59°F) and an average of 25°C (78°F). The maximum temperatures in January can reach 22°C (71°F), whereas in August, they soar to a maximum of 37°C (99°F). Additionally, January is characterized by higher humidity at 84%, compared to August's 72%. Precipitation is also notable, with January receiving 61 mm (2.4 in) over 7 days and August experiencing heavier rainfall of 146 mm (5.7 in) over 15 days. For more details on August weather, check out Mount Vernon weather in August.

January and September exhibit distinct weather patterns that reflect the transition from winter to early autumn. In January, temperatures can plummet as low as -14°C (7°F) with an average of 3°C (38°F), resulting in chilly conditions and an impressive humidity level of 84%. The month typically sees about 61 mm (2.4 inches) of precipitation over around 7 days, often in the form of snow or rain.

In contrast, September enjoys milder and more comfortable weather, with temperatures ranging from a minimum of 6°C (44°F) to a maximum of 37°C (99°F) and an average temperature of 22°C (73°F). This month experiences slightly higher precipitation at 93 mm (3.7 inches) over approximately 11 days and a lower humidity of 75%, contributing to a more pleasant outdoor experience. For more details on the climate during this month, you can check out Mount Vernon weather in September.

In January, the weather can be quite frigid, with temperatures dipping as low as -14°C (7°F) and averaging around 3°C (38°F). This month experiences a moderate amount of precipitation, totaling 61 mm (2.4 in) over approximately 7 days, accompanied by high humidity levels at 84%.

In contrast, October brings milder temperatures, with a minimum of 2°C (36°F) and an average of 17°C (63°F), reaching a maximum of 36°C (97°F) on warmer days. While October has a higher total precipitation of 105 mm (4.2 in) over 9 days, the humidity is slightly lower at 81%. For more details on the October climate, you can refer to Mount Vernon weather in October.

When comparing the weather in January and November, notable differences emerge in both temperature and precipitation. January typically experiences colder temperatures, with a minimum of -14°C (7°F) and an average of 3°C (38°F), while November is milder, with a minimum of -5°C (23°F) and an average of 9°C (48°F). In terms of maximum temperatures, January peaks at 22°C (71°F), whereas November reaches up to 26°C (78°F). Precipitation is somewhat higher in November at 77 mm (3.0 in) compared to January's 61 mm (2.4 in), although both months see rain on about 7 days. Humidity levels are similar, hovering around 84% in January and 85% in November. For a deeper insight into November conditions, you can check Mount Vernon weather in November.

In Mount Vernon, January typically experiences slightly colder temperatures than December, with average highs around 3°C (38°F) compared to December's 5°C (42°F). January's minimum temperatures can drop to -14°C (7°F), while December's lows are milder at -10°C (14°F). Additionally, January sees a decrease in total precipitation, with 61 mm (2.4 in) over about 7 days, compared to December's 89 mm (3.5 in) across 9 days. Despite these variations, both months maintain a consistent humidity level of 84%. For more details, check out Mount Vernon weather in December.

Compare Mount Vernon's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in Mount Vernon

January in Mount Vernon brings chilly temperatures, often contrasting sharply with the milder conditions experienced in other months. While maximums can reach a comfortable 22°C, the average dips to a brisk 3°C, and at times, the mercury plummets to a frigid -14°C. This month is also marked by notably high humidity levels and occasional precipitation, making it a time when the landscape takes on a serene, wintry charm. As the season progresses, the city transitions away from this cold, leading to a gradual warming and a shift in the overall climate. For a deeper look into the yearly weather patterns, visit Mount Vernon Climate.