Tomorrow in Mesa looks
sunny, with a high of 108°
and an overnight low of 89°.
Precipitation chance is modest at 36%.
Winds top out near 18 mph,
and the UV index reaches 10 (very high).
Weather in Mesa is shaped by its semi-arid climate - expect big day-to-night temperature swings and modest rainfall. July afternoons typically reach 106°F (41°C), while January highs hover near 65°F (19°C). Annual precipitation averages 11.2 inches (285 mm) over about 37 rainy days.
Mesa weather: quick facts
Hottest month: July - highs near 106°F (41°C)
Coldest month: January - highs near 65°F (19°C)
Record high: 118°F (48°C) · Record low: 26°F (-4°C) (2015–2024)
Wettest month: January (5 rainy days) · Sunniest: June (13.1 h sun/day)
Climate type:semi-arid - big day-to-night temperature swings and modest rainfall
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 106°F (41°C) and overnight lows stay near 84°F (29°C). The coolest month is January, with typical highs of 65°F (19°C) and lows around 43°F (6°C). Based on 2015–2024 weather data, temperatures have reached as high as 118°F (48°C) and dropped as low as 26°F (-4°C).
Rain, sun and snow
January is usually the wettest month. It brings about 1.6 inches (42 mm) of rain over 5 days, while May is the driest. June brings the most sunshine, averaging 13.1 hours of sun a day.
Season by season
Spring (March through May)
Spring in Mesa brings hot afternoons, with daytime highs averaging 85°F (30°C) and nights around 59°F (15°C); precipitation is infrequent.
Summer (June through August)
Summer in Mesa is intensely hot, with daytime highs averaging 105°F (40°C) and nights around 81°F (27°C); rain falls on about 11 days over the three months.
Fall (September through November)
Fall in Mesa runs hot, with daytime highs averaging 88°F (31°C) and nights around 64°F (18°C); precipitation is infrequent.
Winter (December through February)
Winter in Mesa is crisp but comfortable, with daytime highs averaging 67°F (20°C) and nights around 45°F (7°C); rain falls on about 13 days over the three months.
Average temperatures in Mesa by month
Monthly averages for Mesa based on 2015–2024 weather data.
July is the hottest month in Mesa, with average highs of 106°F (41°C) and overnight lows near 84°F (29°C). In the past decade the temperature has peaked at 118°F (48°C).
What is the coldest month in Mesa?
January is the coldest month, with highs averaging 65°F (19°C) and lows around 43°F (6°C). The lowest reading in recent years was 26°F (-4°C).
What is the rainiest month in Mesa?
January is typically the wettest month, averaging 1.6 inches (42 mm) of precipitation across about 5 days. May is usually the driest.
Does it snow in Mesa?
Snow is essentially absent in Mesa - the 2015–2024 record shows no regular measurable snowfall.
What is the best time to visit Mesa?
The best time to visit Mesa is generally November to March, when temperatures are at their most comfortable before or after the peak heat. Daytime temperatures in that window typically sit near 71°F (22°C).
How sunny is Mesa?
Mesa averages 10.9 hours of sunshine per day across the year. June is the sunniest month at about 13.1 hours of sun a day.
Is Mesa humid?
Relative humidity in Mesa averages about 34% over the year, which feels dry. The most comfortable months tend to fall in the drier part of the year.