Mesa, AZ weather and climate in 2025
Day
40 °C
Night
25 °C
Sea
0 °C
Precipitation
28 mm
in month
Rainy days
5 days
in month
Daylight
14 hours
average
Sunshine
12 hours
average
Humidity
34 %
Day
40 °C
Night
25 °C
Sea
0 °C
Precipitation
28 mm
in month
Rainy days
5 days
in month
Daylight
14 hours
average
Sunshine
12 hours
average
Humidity
34 %
Overview: Mesa, AZ
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Weather overview for Mesa, AZ
Weather overview
Mesa, AZ, boasts a desert climate with little rainfall and high temperatures. Summers scorch with mercury soaring beyond 38.8 degrees Celsius in June, while winters offer mild relief, touching lows of 5.1 degrees Celsius in December. In the absence of any significant wet season, the sky remains largely sunny allowing for a plethora of sun-kissed activities throughout the year. However, few rainy days can punctuate the otherwise dry months, particularly July and August, when the monsoon season sprinkles its influence. Desert winds are generally mild, amplifying the contrast between day and night temperatures.
January weather
January sees the chill of winter with nights averaging at 5 °C (42 °F), while days can be pleasantly warm at 20 °C (67 °F). The rainfall is sporadic, offering a few wet days that total to 28 mm (1.09 in) of precipitation.
February weather
February in Mesa is mild with days warming up to 22 °C (71 °F) and nights still cool at 7 °C (44 °F). Winds pick up slightly, averaging 2 m/s, but rain remains a rare visitor with comparable precipitation to January.
March weather
As spring beckons, March sees daytime highs at 25 °C (76 °F) with night temperatures at 9 °C (48 °F). The city's relative humidity starts to decline to 39 %, and the sunny hours continue to increase.
April weather
April marks the transition towards hotter days in Mesa with an average high of 29 °C (84 °F). Nighttime cools to 12 °C (54 °F), while the wind speed is at its peak for the year, 3 m/s.
May weather
May in Mesa showcases the desert's impending summer heat, with daily highs reaching 34 °C (93 °F), while nights are still comfortable at 17 °C (62 °F).
June weather
June's scorching heat is at full blast with daytime highs peaking at 39 °C (102 °F), while night temperatures remain balmy at 21 °C (70 °F).
July weather
July brings the hottest days of the year with a sizzling average high of 40 °C (105 °F), and nights that hardly give a respite at 25 °C (78 °F). The monsoon season can also bring sudden storms, increasing the wet days to an average of 5 days.
August weather
August slightly eases off the peak temperature to 39 °C (103 °F), but nights remain very warm at 25 °C (77 °F). The monsoon can still bring occasional thunderstorms, adding to the humidity.
September weather
September in Mesa begins to hint at autumn as the heat starts to recede, marking the daytime highs at 38 °C (100 °F) and nights gradually cooling to 22 °C (71 °F).
October weather
October ushers in more perceptible cooling trends with a noticeable reduction in both high 32 °C (89 °F) and low 16 °C (60 °F) temperatures. The wind calms to 2 m/s, and the days are still mostly sunny.
November weather
November sees a significant shift as the temperatures moderate, with average highs at 25 °C (77 °F) and night temperatures dropping to 9 °C (48 °F), signaling the onset of cooler weather.
December weather
December wraps up the year with some of the coolest temperatures, a high of 20 °C (67 °F) is typical during the day, and night temperatures can drop to a crisp 5 °C (41 °F).
FAQs
How many layers of clothing would be recommended in Mesa during January?
Layering is key in Mesa's January. By day, a light jacket might suffice with daytime temperatures reaching 20 °C (67 °F), but evenings call for an added layer or two as the mercury dips to 5 °C (42 °F).
Is February ideal for outdoor activities in Mesa?
Absolutely! With temperatures reaching up to 22 °C (71 °F) and minimal rain, February is a wonderful time for enjoying the outdoors in Mesa.
Should I bring sunscreen for March in Mesa?
Sunscreen is a must with 86 percent sun and nearly 10 hours of daily sunshine, combined with rising temperatures and low humidity.
Is April generally considered hot in Mesa?
April sees the onset of warmth in Mesa, with temperatures hovering around 29 °C (84 °F) during the day, which most would consider quite warm.
What is the best type of clothing for a day out in Mesa during May?
Lightweight, breathable clothing is best to navigate Mesa's May heat of 34 °C (93 °F) during the day, with lighter layers for the evenings.
How intense is the heat in Mesa during June?
June's heat in Mesa is relentless, with daytime temperatures soaring to a sweltering 39 °C (102 °F). Staying cool is a challenge under such intense sun.
What's the chance of experiencing a monsoon in Mesa during July?
With the monsoon season underway, there's a reasonable chance of encountering brief but powerful storms, as July expects around 5 days of rainy weather.
Is August much cooler than July in Mesa?
August is marginally cooler than July with high temps averaging 39 °C (103 °F), but it remains extremely hot, with little relief in the evenings.
Will I still need air conditioning in Mesa throughout September?
Yes, air conditioning remains a necessity with September's heat, which can reach up to 38 °C (100 °F) during the day before easing at night.
Is October a comfortable month for weather in Mesa?
October's weather is increasingly comfortable, especially with pleasant highs around 32 °C (89 °F), offering a reprieve from the summer heat.
What kind of weather should I expect in Mesa in November?
November weather in Mesa is mild and pleasant, perfect for outdoor adventures with highs of 25 °C (77 °F) and fresh nights.
Would I need a winter coat in Mesa for December evenings?
While you might not need a thick winter coat, a warm jacket is advisable for the chillier nights of December, as the temperature can dip to 5 °C (41 °F).
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