January Weather in Mesa, United States

Last updated: February 24, 2025

January in Mesa, United States offers a dynamic range of weather, featuring maximum temperatures reaching up to 28°C (82°F) and a comfortable average of 12°C (53°F). However, residents and visitors should prepare for cooler nights, as temperatures can drop to a brisk -2°C (29°F). With 33 mm (1.3 in) of precipitation spread over just 4 days, January can feel quite humid, with levels averaging around 76%. This blend of warmth during the day and chill at night, alongside occasional rain, creates a unique winter atmosphere in Mesa.

January Temperature in Mesa

In January, Mesa experiences a delightful range of temperatures, with minimums dipping to -2°C (29°F) and averages settling around 12°C (53°F). The maximums can reach up to 28°C (82°F), creating a pleasant contrast to the chilly mornings. As the months progress into February and March, the climate gradually warms, with February's lows slightly rising to 0°C (33°F), while March introduces warmer days with averages of 17°C (63°F). This upward trend continues through spring, culminating in the scorching summer months, where temperatures soar to highs above 40°C (104°F). January serves as a refreshing precursor to the intense heat that characterizes Mesa’s climate, showcasing the region’s remarkable seasonal variations.

January Weather in Mesa: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Mesa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec535663738191949388746454
Data source: Temperature data for Mesa 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 Mesa

January brings an average precipitation of 33 mm (1.3 in) to Mesa, marking a transitional phase as the region shifts from winter to spring. With rain typically falling on 4 days, this month sets the stage for the wetter periods ahead, such as February, which sees a slight increase in rainfall at 44 mm (1.7 in). However, by April, the skies tend to dry out significantly, with only 2 mm (0.1 in) of rain—a trend that continues into the summer months. Notably, while July experiences a spike in rainfall with 38 mm (1.5 in), it is often accompanied by more frequent precipitation days. This cyclical pattern highlights Mesa's distinct seasonal shifts, where January serves as a herald of the varied weather to come.

January Precipitation Trends in Mesa

The chart displays monthly precipitation patterns in Mesa, 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.
JanFebMarAprMayJunJulAugSepOctNovDec334431222383328252327
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Mesa

In January, Mesa experiences a relatively high humidity level of 76%, setting the stage for a humid winter. As the month transitions into February, humidity rises further to 79%, peaking in the early months of the year. However, this trend quickly shifts, with March seeing a notable drop to 67%, signaling the onset of drier conditions as spring approaches. This decrease continues through April, where humidity levels fall to 55%, before reaching a low of 40% by May. The summer months reveal even drier air, with humidity dipping to 33% in June and slightly increasing to 34% in July. The transition into August brings a moderate rise to 48%, before autumn settles in with September climbing to 64%. The year wraps up with a gradual increase in humidity again, hitting 77% in November and culminating at 82% in December. Overall, Mesa showcases a clear seasonal pattern in its humidity, marked by a distinct winter peak and a late-summer lull.

January Average Humidity in Mesa

This chart illustrates the average monthly humidity levels in Mesa, 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.
JanFebMarAprMayJunJulAugSepOctNovDec76%79%67%55%40%33%34%48%64%67%77%82%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Mesa

In January, Mesa experiences a moderate UV Index of 4, which means residents can generally enjoy outdoor activities with a burn time of about 30 minutes before needing sun protection. As the month transitions into February, the UV Index rises to 6, marking the beginning of higher sun exposure and a reduced burn time of 25 minutes. The upward trend continues into March and April, with the UV Index hitting 9 and 10 respectively—both categorizing as very high and significantly cutting down burn time to just 15 minutes. As spring gives way to summer, May through August reaches extreme levels with an index peaking at 11 and maintaining that intensity, demanding cautious sun protection within a mere 10-minute burn window. This pattern of increasing UV intensity gradually eases in the fall, as September and October return to very high levels, allowing burn times of 15 minutes again. By November and December, the index drops back to moderate levels, similar to January, signaling a respite from intense sun exposure. For more detailed information on understanding the UV Index in Mesa, visit Mesa UV Index.

Maximum UV Index Levels in Mesa for January

The chart shows the monthly maximum UV Index (UVI) for Mesa 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.
JanFebMarAprMayJunJulAugSepOctNovDec469101112111110854
Data source: Mesa 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 Mesa

In Mesa, United States, January marks the beginning of the year with 193 hours of sunshine, gradually building toward a radiant spring. As we transition to February, the sun graces the skies for 239 hours, hinting at the warmer days to come. March ushers in a vibrant 308 hours of sunlight, followed closely by April with 332 hours, as residents eagerly welcome longer days and blooming landscapes. The sun reaches its peak in June, basking the city in 374 hours of brightness, providing the perfect backdrop for summer activities. However, from July onward, the hours of sunlight begin to subtly decline, settling at 359 hours in July and tapering to 344 hours in August. The trend of decreasing sunlight continues into the fall months, with September offering 316 hours and October trailing down to 298 hours. Ultimately, November and December bring a cozy conclusion to the year with 259 and 240 hours of sunshine, respectively, making the cool winter months a perfect time for reflection before the sunshine reignites the cycle once more.

Monthly Sunshine Duration in Mesa: January Highlighted

The January sunshine duration represents the total number of hours Mesa 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.
JanFebMarAprMayJunJulAugSepOctNovDec193h239h308h332h373h374h359h344h316h298h259h240h
Data source: Mesa January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Mesa During January

In Mesa, Arizona, January presents a 60% chance of sunny weather, making it a delightful start to the year for sun-seekers. The likelihood of clear skies steadily increases as the months progress, peaking in May with an impressive 90% chance of sunshine. Interestingly, the winter months, while less favorable for sun than the spring and summer, still offer a noteworthy amount of clear days. As spring approaches, February and March display a notable rise in sun exposure, reaching 72% and 73% respectively. However, as summer arrives, the sun's prominence diminishes with July dropping to 36%, suggesting a seasonal fluctuation in sunshine that serves both locals and visitors. Overall, January’s sun percentage sets the tone for a generally bright and sun-filled year ahead in Mesa.

Percentage of Sunny Days in January in Mesa

The chart illustrates the percentage of sunny days in Mesa 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 Mesa experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec60%72%73%76%90%71%36%58%69%76%71%55%
Data source: Mesa January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Mesa in January

In Mesa, United States, January heralds the beginning of the year with 10 hours of daylight, a bright start in the desert landscape. As the month transitions into February, daylight remains steady, also offering 10 hours. However, a shift begins in March, as the days grow noticeably longer, culminating in 11 hours of sunlight. This upward trend continues into the spring months; April and May bask in 13 hours each, with June reaching a peak of 14 hours during summer, ensuring ample time for outdoor adventures. The sunshine gradually diminishes as summer gives way to fall; July retains 14 hours but sees a shift in August, where daylight tapers to 13 hours. September and October follow suit, with daylight hours decreasing to 12 and then 11, before the year winds down. November closes with 10 hours, and December slightly dips to 9 hours, illustrating a rhythmic ebb and flow of natural light throughout the year in Mesa.

Average Daylight Hours in Mesa for January

The chart illustrates the variation in daylight duration in Mesa throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 11m10h 59m11h 59m13h 2m13h 54m14h 20m14h 5m13h 19m12h 19m11h 17m10h 23m9h 56m
Data source: Mesa daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Mesa

In January, the wind in Mesa, United States, whispers gently with an average speed of 2.2 m/s (5 mph), setting the stage for a calm and serene winter atmosphere. As the months progress towards spring, a subtle upward trend emerges, with February experiencing a slight increase to 2.3 m/s (5 mph), and March adding more vigor at 2.6 m/s (6 mph). This mild escalation continues into April and May, where the winds maintain a steady 2.7 m/s (6 mph). However, as summer arrives in July, a notable dip occurs, bringing the average back down to 2.1 m/s (5 mph), marking a shift towards the calmer breezes typical of the season. The trend of gentle winds persists through August and September, each hovering around 1.9 m/s (4 mph). As fall approaches, the wind picks up slightly in October and November, before settling back into calmness in December. Overall, January's breezy demeanor sets a serene tone, with subtle fluctuations hinting at the transition of seasons.

Average January Wind Speed in Mesa

The chart displays monthly wind speed patterns in Mesa, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.2 m/s2.32.62.72.62.72.11.91.92.32.01.9
Data source: Mesa January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Mesa Compares to Other Months

The weather in Mesa 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 Mesa and find detailed weather information for every month.

In January, temperatures range from a chilly minimum of -2°C (29°F) to a pleasant maximum of 28°C (82°F), with an average of 12°C (53°F). The month sees relatively low precipitation, totaling 33 mm (1.3 in) over just 4 days, and the humidity averages around 76%. In contrast, February experiences slightly milder conditions, with minimum temperatures at 0°C (33°F) and an average of 13°C (56°F), while still reaching a maximum of 28°C (83°F). However, February is wetter, with total precipitation of 44 mm (1.7 in) across the same number of rainy days, and a marginal increase in humidity to 79%. For more details on February weather, check out Mesa weather in February.

In January, the weather is considerably cooler, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 28°C (82°F) and an average of 12°C (53°F). The month experiences about 33 mm (1.3 in) of precipitation over four days, coupled with a higher humidity level of 76%. In contrast, March sees a noticeable increase in temperature, with a minimum of 3°C (38°F) and a maximum of 34°C (94°F), averaging 17°C (63°F). Precipitation slightly decreases to 31 mm (1.2 in) over just three days, and humidity drops to 67%. For more detailed information, you can check Mesa weather in March.

January and April offer contrasting weather experiences. In January, temperatures range from a chilly minimum of -2°C (29°F) to a warm maximum of 28°C (82°F), averaging around 12°C (53°F). This month also brings about 33 mm (1.3 in) of precipitation over four days, coupled with a humidity level of 76%. Conversely, April presents a significantly warmer ambiance, with temperatures starting at a minimum of 7°C (44°F) and soaring to a maximum of 39°C (102°F), averaging 23°C (74°F). Notably, April enjoys a dry spell, receiving only 2 mm (0.1 in) of precipitation over zero days, and humidity decreases to 55%. For a more detailed look at what to expect, check out Mesa weather in April.

In January, the weather is notably cooler, with temperatures ranging from a minimum of -2°C (29°F) to an average of 12°C (53°F) and a maximum of 28°C (82°F). This month also experiences moderate humidity at 76% and sees some precipitation, averaging 33 mm (1.3 in) over about 4 days. In contrast, May brings much warmer temperatures, with a minimum of 12°C (54°F), an average of 27°C (81°F), and highs soaring up to 42°C (108°F). The month is characterized by very low precipitation at just 2 mm (0.1 in) and a dry spell with no rainy days, along with a significantly reduced humidity level of 40%. For more details on the pleasant weather in May, you can check out Mesa weather in May.

In January, the weather is quite cool with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 28°C (82°F), and an average of 12°C (53°F). Precipitation is relatively moderate, with about 33 mm (1.3 in) falling over four days, accompanied by high humidity levels at 76%. In contrast, June experiences significantly warmer temperatures with a minimum of 17°C (64°F) and a scorching maximum of 47°C (117°F), leading to an average of 33°C (92°F). Rain is scarce in June, with only 2 mm (0.1 in) of precipitation over no days and humidity dropping to a comfortable 33%. For a more detailed look into June weather, you can check Mesa weather in June.

January and July in Mesa display a dramatic contrast in weather conditions. In January, temperatures range from a chilly minimum of -2°C (29°F) to a comfortable maximum of 28°C (82°F), with an average of 12°C (53°F). The month sees moderate precipitation, totaling 33 mm (1.3 in) over four days, accompanied by higher humidity levels of 76%. In stark contrast, July experiences much hotter weather, with minimum temperatures starting at 23°C (73°F) and soaring to a scorching maximum of 47°C (116°F), and an average of 34°C (94°F). July also records slightly more precipitation at 38 mm (1.5 in) but features a lower humidity of 34%, creating a dry heat that can be quite intense. For a detailed overview of July's weather, you can check Mesa weather in July.

January weather features a significant temperature range, with minimums dropping to -2°C (29°F) and maximums reaching up to 28°C (82°F), creating a chilly average of 12°C (53°F). Despite its low temperatures, January experiences a modest amount of precipitation, totaling 33 mm (1.3 in) over four days, coupled with a higher humidity level of 76%.

In contrast, August presents a much warmer climate, with temperatures ranging from a minimum of 22°C (71°F) to scorching maximums of 46°C (115°F), leading to an average temperature of 34°C (93°F). Similar to January, it receives 33 mm (1.3 in) of precipitation over four days, but the humidity drops to 48%, offering a much drier heat. For more detailed information, you can explore Mesa weather in August.

January and September exhibit contrasting weather patterns. In January, temperatures range from a chilly minimum of -2°C (29°F) to a mild average of 12°C (53°F), with maximums reaching up to 28°C (82°F). The month sees approximately 33 mm (1.3 in) of precipitation over 4 days, accompanied by a high humidity level of 76%. In contrast, September boasts much warmer temperatures, with a minimum of 12°C (54°F), an average of 31°C (88°F), and maximums soaring to a scorching 44°C (112°F). Precipitation in September is slightly lower at 28 mm (1.1 in) over just 3 days, coupled with a lower humidity level of 64%. For more details about September weather conditions, visit Mesa weather in September.

When comparing the weather of January and October, notable differences emerge. In January, temperatures range from a chilly minimum of -2°C (29°F) to a warm maximum of 28°C (82°F), with an average of 12°C (53°F). The month experiences 33 mm (1.3 in) of precipitation over four days, accompanied by a humidity level of 76%. In contrast, October boasts a milder minimum temperature of 6°C (43°F) and a much warmer average of 24°C (75°F), reaching a high of 40°C (104°F). Precipitation drops to 25 mm (1.0 in) over just two days, and humidity is lower at 67%. This comparison highlights the transition from the colder, wetter start of the year to the warm, drier conditions of autumn. For more details about the climate in October, you can visit Mesa weather in October.

In January, temperatures can range from a minimum of -2°C (29°F) to a maximum of 28°C (82°F), with an average of 12°C (53°F). The month experiences about 33 mm (1.3 in) of precipitation over approximately 4 days, and humidity levels average at 76%. In contrast, November presents milder conditions, with temperatures varying from a minimum of 5°C (41°F) to a maximum of 36°C (96°F) and an average of 18°C (65°F). Precipitation is lighter in November, totaling 23 mm (0.9 in) over just 1 day, while humidity remains slightly higher at 77%. For more details, check out the Mesa weather in November.

January and December weather in Mesa exhibit striking similarities, particularly in temperature ranges and overall averages. Both months typically see minimum temperatures around -2°C (29°F) to -1°C (31°F) and maximums reaching as high as 28°C (82°F), with an average temperature hovering around 12°C (54°F). Precipitation is slightly higher in January at 33 mm (1.3 in) compared to 27 mm (1.0 in) in December, but both months share the same number of rainy days, totaling four. Humidity levels are also comparable, with January at 76% and December slightly higher at 82%. For a closer look at the December weather in Mesa, check out Mesa weather in December.

Compare Mesa's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in Mesa

As January rolls into Mesa, the weather presents a remarkable shift compared to the hotter months. With mild average temperatures around 12°C (53°F), it's a refreshing time for those seeking a reprieve from the summer heat. The contrast between warm days and cool nights creates a unique climate, underscored by a relatively low precipitation level, with only a few wet days scattered throughout the month. The higher humidity at this time can invite a certain chill, making it the perfect excuse to enjoy cozy indoor activities. For those looking to achieve the ideal balance of pleasant weather and minimal rain, January offers a perfect opportunity to explore the beauty of Mesa. For a deeper dive into what each month has to offer, visit our detailed section on Mesa Climate.