May Weather in Mount Vernon, United States

Last updated: February 24, 2025

May in Mount Vernon, United States, is characterized by a dynamic climate where temperatures ascend to a maximum of 35°C (95°F), offering warm days that invite outdoor activities. The average temperature hovers around 19°C (67°F), providing a comfortable backdrop for both residents and visitors. However, it’s essential to prepare for cooler spells, as temperatures can dip to a minimum of 3°C (37°F). This month also sees a significant amount of rainfall, with 121 mm (4.8 in) accumulated over approximately 12 days, contributing to the region's lush landscapes. With humidity levels at a steamy 78%, May presents a rich tapestry of weather, making it a month of both challenges and charms.

May Temperature in Mount Vernon

May in Mount Vernon heralds the true arrival of warmth, offering a delightful transition from the chill of winter and the briskness of early spring. With minimum temperatures around 3°C (37°F) and an average rising to 19°C (67°F), residents can finally shed the heavy layers as they enjoy the burgeoning beauty of nature. The maximum temperature can soar to a sizzling 35°C (95°F), hinting at the summer heat that lies just ahead. This month captures a vibrant spectrum, where the crisp mornings give way to sunny afternoons, demonstrating a significant climb from April’s averages. As life flourishes outdoors, May becomes a perfect time for exploration and outdoor activities, marking a significant pivot towards the warm months to come.

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

The chart illustrates May 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.

May Precipitation in Mount Vernon

In May, Mount Vernon experiences a noticeable surge in precipitation, with 121 mm (4.8 in) of rainfall spread over 12 days. This marks not only the highest rainfall amount of the year up to this point but also reflects a steady increase in precipitation since January. As spring transitions into summer, the upward trend in rainfall becomes evident; the amount in May surpasses April’s 102 mm (4.0 in), highlighting a robust period of wet weather. With nature bursting into vibrant bloom, the increased precipitation supports lush growth, making May a vital month for the region's flora. The consistency of rainy days serves as a reminder of nature’s rhythm, ultimately paving the way for the warm, wetter months that follow.

May Precipitation Trends in Mount Vernon

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

In Mount Vernon, the month of May marks a gradual decline in humidity, with levels dropping to 78% from the wetter months that precede it. This decrease is part of a larger trend observed throughout the spring, as humidity begins to ease from the year's peak in January at 84%. As the season progresses, the air becomes slightly crisper, allowing residents to enjoy the vibrant blooms of late spring with a touch more comfort. Following May, humidity levels will continue to fluctuate, dipping further in the hotter summer months of July and August, suggesting a burgeoning, yet not oppressive, warmth. Overall, this shift in humidity indicates a transition towards more enjoyable outdoor conditions as summer approaches.

May Average Humidity in Mount Vernon

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

May UV Index in Mount Vernon

As the month of May rolls in, Mount Vernon experiences one of the year's highest UV Index readings, soaring to 10, which places it in the very high exposure category. This increase follows a steady rise from a moderate 3 in January, gradually intensifying to a notable 9 in April. With a burn time of just 15 minutes, May signals a critical time for sun safety, urging residents and visitors to take precautions against harmful sun exposure. The trend showcases not only the escalating intensity of UV radiation as spring transitions to summer but also highlights the importance of being vigilant about skin protection. For more details on UV levels throughout the year, check out the full overview here: Mount Vernon UV Index.

Maximum UV Index Levels in Mount Vernon for May

The chart shows the monthly maximum UV Index (UVI) for Mount Vernon in May, 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 May 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.

May Sunshine in Mount Vernon

In Mount Vernon, the arrival of May heralds a delightful increase in sunshine, with an impressive 286 hours of radiant light gracing the skies. This marks a significant peak in the springtime transition, following April’s steady 259 hours. Clearly, as winter yields to the warmth of spring, daylight hours blossom, paving the way for a vibrant summer ahead. The steady climb continues, notably reaching 331 hours by June and peaking in July with a brilliant 357 hours. This trend illustrates the town's delightful journey from the muted light of January to the sun-kissed exuberance of summer, promising beautiful days ahead for outdoor enthusiasts and nature lovers alike.

Monthly Sunshine Duration in Mount Vernon: May Highlighted

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

Chance of Sun in Mount Vernon During May

In Mount Vernon, the likelihood of sunny weather experiences notable fluctuations throughout the year. May, with a 40% chance of sunshine, shows a slight dip compared to the lively weather patterns of March (52%) and April (49%). Interestingly, as spring transitions into summer, this chance remains relatively low, particularly when compared to September's promising 55% and November's peak at 58%. The trends indicate a moderate but inconsistent probability of sunny days, suggesting that while you may still enjoy some bright moments in May, it's wise to keep an umbrella handy as you soak in the beautiful transitions of the season.

Percentage of Sunny Days in May in Mount Vernon

The chart illustrates the percentage of sunny days in Mount Vernon throughout the year, with May 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 May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Mount Vernon in May

As spring transitions into summer, May brings a delightful peak in daylight duration for Mount Vernon, United States, with 14 hours of sunlight illuminating the days. This increase is part of a gradual trend that begins in January with just 9 hours, steadily climbing each month. By April, daylight stretches to 13 hours, setting the stage for May’s bright arrival. Following May, the daylight hours remain steadfast at 14 for June and July, allowing residents to indulge in long, sun-filled days. However, as summer wanes, the gradual decline begins—by August, daylight reduces to 13 hours, and continues its descent through the fall months. Such rhythmic shifts in daylight not only enhance the seasonal ambiance but also influence the activities and lifestyles of those in Mount Vernon.

Average Daylight Hours in Mount Vernon for May

The chart illustrates the variation in daylight duration in Mount Vernon throughout the year, with May 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.

May Winds in Mount Vernon

In Mount Vernon, the wind begins to gently recede as May arrives, with an average speed of 2.8 m/s (6 mph), inching down from the breezier months of early spring. Following a consistent trend, the wind speeds were stable around 3.2 m/s (7 mph) from January through April, offering a refreshing, invigorating breeze as the seasons turned. However, as the impending summer approaches, the winds seem to mellow, foretelling the calm warmth of June and July, which dip further to 2.5 m/s (6 mph) and 2.3 m/s (5 mph), respectively. This gradual softening of winds sets the stage for a pleasant summer ahead, where gentle whispers of the breeze complement the vibrant life blossoming in the region.

Average May Wind Speed in Mount Vernon

The chart displays monthly wind speed patterns in Mount Vernon, with values for each month shown alongside May's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how May's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.93.23.23.22.8 m/s2.52.31.92.52.72.92.8
Data source: Mount Vernon May wind data, generated using information from the Copernicus Climate Change Service.

How May 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 May'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.

May and January present stark contrasts in weather conditions. In May, temperatures range from a minimum of 3°C (37°F) to a maximum of 35°C (95°F), with an average of 19°C (67°F), while January experiences much colder weather, with temperatures ranging from a chilling -14°C (7°F) to a warmest peak of 22°C (71°F), averaging just 3°C (38°F). Precipitation is more frequent in May, with 121 mm (4.8 in) falling over 12 days, compared to January's 61 mm (2.4 in) over just 7 days. Additionally, an average humidity of 78% in May is slightly lower than January's 84%, contributing to a more comfortable atmosphere in the late spring. For more details, you can check out Mount Vernon weather in January.

May and February present contrasting weather patterns. In May, temperatures range from a chilly 3°C (37°F) at night to a warm average of 19°C (67°F) during the day, peaking at a hot 35°C (95°F). This month experiences significant precipitation, with about 121 mm (4.8 in) over 12 rainy days and a humidity level of 78%. On the other hand, February is much colder, with temperatures dipping as low as -14°C (7°F) and averaging a mere 5°C (42°F), while maxing out at a comfortable 27°C (81°F). The month sees around 96 mm (3.8 in) of rainfall over 11 days, coupled with slightly higher humidity at 83%. For more details about February weather, check out Mount Vernon weather in February.

When comparing the weather in March and May, it’s clear that May offers much warmer temperatures, with an average of 19°C (67°F) compared to March's cooler average of 8°C (47°F). The minimum temperatures in May are also notably higher, starting at 3°C (37°F), while March can dip as low as -6°C (22°F). Precipitation is more frequent in May, occurring on 12 days with a total of 121 mm (4.8 inches), compared to March, which experiences around 82 mm (3.2 inches) over 9 days. Additionally, the humidity levels are slightly lower in May at 78%, versus March's 83%. For those interested, you can explore more about the specifics of March weather at Mount Vernon weather in March.

In comparing the weather of April and May, we observe a noticeable increase in temperatures during May. The minimum temperature rises from April's low of -1°C (31°F) to a minimum of 3°C (37°F) in May, with average temperatures in May reaching 19°C (67°F) compared to April's average of 14°C (58°F). The maximum temperatures are similar, peaking at 35°C (95°F) in May and 33°C (92°F) in April. Additionally, while April experiences slightly less precipitation at 102 mm (4.0 in) over 11 days, May sees an uptick in rainfall to 121 mm (4.8 in) across 12 days, accompanied by a humidity level of 78% in May compared to 81% in April. For more detailed insights into April weather, you can visit Mount Vernon weather in April.

In comparing the weather patterns of May and June, we notice a distinct shift towards warmer temperatures in June. May experiences a minimum of 3°C (37°F) and an average of 19°C (67°F), whereas June sees a higher minimum of 9°C (49°F) and an average temperature rising to 24°C (76°F). The maximum temperatures also increase, with May reaching up to 35°C (95°F) compared to June's peak of 37°C (98°F). Precipitation levels are relatively similar, with May receiving 121 mm (4.8 in) over 12 days and June experiencing slightly less at 107 mm (4.2 in) across 13 days. Both months exhibit high humidity, with May at 78% and June slightly higher at 79%. For a more detailed look at June's weather, you can visit Mount Vernon weather in June.

May and July exhibit notable differences in weather patterns. In May, temperatures range from a cooler minimum of 3°C (37°F) to a maximum of 35°C (95°F), with an average temperature of 19°C (67°F). The month is characterized by moderate precipitation, totaling 121 mm (4.8 in) over 12 days, and a higher humidity level of 78%. In contrast, July sees much warmer temperatures, with a minimum of 16°C (61°F) and a peak of 38°C (102°F), averaging 27°C (81°F). Rainfall is slightly higher at 132 mm (5.2 in), also spread over 12 days, but humidity decreases to 74%. For a more detailed look at July weather, check out Mount Vernon weather in July.

In comparing the weather between May and August, we see distinct differences in temperature and precipitation. May experiences a broader range of temperatures, with a minimum of 3°C (37°F) and a maximum of 35°C (95°F), while August typically has milder lows at 15°C (59°F) and warmer highs reaching up to 37°C (99°F). Precipitation is slightly higher in August at 146 mm (5.7 in) over 15 rainy days, compared to May's 121 mm (4.8 in) over 12 days, though humidity is lower in August at 72% compared to May’s 78%. For more details on summer weather patterns, you can check out Mount Vernon weather in August.

May and September present distinct weather profiles, with May experiencing a wider temperature range, from a chilly minimum of 3°C to a sweltering maximum of 35°C. In contrast, September sees slightly milder conditions, beginning at 6°C and reaching a maximum of 37°C. While May tends to be more humid at 78% and has higher precipitation levels of 121 mm over 12 days, September is slightly drier with 93 mm of rain across 11 days and a lower humidity of 75%. This transition from spring to fall highlights the shifting climate as the year progresses. For more detailed information, you can check Mount Vernon weather in September.

May and October present contrasting yet similar weather patterns. In May, temperatures range from a minimum of 3°C (37°F) to a maximum of 35°C (95°F), with an average of 19°C (67°F). Precipitation is relatively high at 121 mm (4.8 in) over about 12 days, and humidity sits at 78%. In contrast, October sees slightly cooler conditions, with a minimum of 2°C (36°F) and a maximum of 36°C (97°F), yielding an average temperature of 17°C (63°F). The month receives 105 mm (4.2 in) of rain over 9 days, accompanied by a slight increase in humidity at 81%. Both months experience notable rainfall, but October tends to be a bit drier while maintaining cooler temperatures. For a closer look at what to expect, check out Mount Vernon weather in October.

May and November showcase contrasting weather conditions, significantly influenced by seasonal transitions. In May, temperatures range from a milder 3°C (37°F) at night to a warm average of 19°C (67°F) during the day, peaking at a maximum of 35°C (95°F). This month also experiences higher precipitation, with 121 mm (4.8 in) over approximately 12 days, contributing to a humidity level of 78%.

In contrast, November brings cooler temperatures, with minimums dipping to -5°C (23°F) and an average of 9°C (48°F), while maxing out at 26°C (78°F). Rainfall decreases to 77 mm (3.0 in) over just 7 days, and humidity rises slightly to 85%. For more details about November conditions, you can explore Mount Vernon weather in November.

May and December present stark contrasts in weather. In May, temperatures range from a minimum of 3°C (37°F) to a maximum of 35°C (95°F), with an average of 19°C (67°F), while December's temperatures are much cooler, with lows of -10°C (14°F) and highs of 20°C (69°F), averaging around 5°C (42°F). May experiences more rainfall, totaling 121 mm (4.8 in) over 12 days, whereas December sees less at 89 mm (3.5 in) over just 9 days. Additionally, the humidity is slightly higher in December at 84%, compared to 78% in May. For more details, you can check out the Mount Vernon weather in December.

Compare Mount Vernon's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Mount Vernon

As the calendar turns to May, Mount Vernon experiences a vivid transition in weather that sets it apart from the cooler months. With a warm average temperature enveloping the city, days blossom into warm afternoons, nudging temperatures to peak at 35°C (95°F). However, the lingering chill of early spring persists during the nights, reminding us of the seasonal shift with cooler lows around 3°C (37°F). While rainfall graces the landscape with a total of 121 mm (4.8 in) over about 12 days, the humidity levels hover around 78%, adding a tropical touch to the air. This refreshing mix of warmth and moisture cultivates the region's lush greenery and vibrant blooms, making May a truly enchanting month in Mount Vernon. For more insights into the weather patterns throughout the year, visit Mount Vernon Climate.