Mesa, AZ Weather
Mesa hourly forecast: next 24 hours
Today's high of 109°F (43°C) is about 5°F (3°C) above the typical August high of 104°F (40°C).
Current conditions in detail
Mesa weather tomorrow (Tuesday, August 11)
Tomorrow in Mesa looks dust haze, with a high of 104° and an overnight low of 84°. Precipitation chance is modest at 36%. Winds top out near 14 mph, and the UV index reaches 9 (very high).
Mesa 14-day forecast
About the weather in Mesa
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
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 65° | 43° | 5 | 1.6 in | 8.5 h/day | 54% |
| February | 70° | 46° | 4 | 1.2 in | 9.6 h/day | 46% |
| March | 77° | 51° | 4 | 1.0 in | 10.6 h/day | 37% |
| April | 87° | 59° | 1 | 0.2 in | 12.5 h/day | 22% |
| May | 93° | 67° | 1 | 0.1 in | 12.9 h/day | 19% |
| June | 105° | 78° | 1 | 0.2 in | 13.1 h/day | 17% |
| July | 106° | 84° | 5 | 1.6 in | 12.1 h/day | 31% |
| August | 104° | 82° | 6 | 1.4 in | 12.1 h/day | 35% |
| September | 100° | 76° | 3 | 0.9 in | 11.4 h/day | 32% |
| October | 89° | 64° | 2 | 0.9 in | 10.5 h/day | 32% |
| November | 76° | 53° | 2 | 0.7 in | 9.4 h/day | 36% |
| December | 67° | 45° | 4 | 1.3 in | 8.2 h/day | 48% |