Mesa, AZ Weather
Mesa hourly forecast: next 24 hours
Today's high of 118°F (48°C) is about 14°F (8°C) above the typical August high of 104°F (40°C).
Current conditions in detail
Mesa weather tomorrow (Thursday, August 27)
Tomorrow in Mesa looks overcast, with a high of 105° and an overnight low of 92°. Rain is unlikely (8% chance). Winds top out near 11 mph, and the UV index reaches 10 (very high).
Mesa 14-day forecast
About the weather in Mesa
With 11.2 inches (285 mm) of annual precipitation, Mesa is one of the drier places we cover. January is the wettest month it gets, at 1.6 inches (42 mm), and the year runs between 65°F (19°C) and 106°F (41°C) by day.
Mesa weather: quick facts
- Hottest month: July - highs near 106°F (41°C)
- Coldest month: January - highs near 65°F (19°C)
- Decade extremes (2015-2024): 118°F (48°C) high · 26°F (-4°C) low
- Wettest month: January (5 rainy days) · Sunniest: June (13.1 h sun/day)
- Climate type: semi-arid
- Annual swing: 23°C between the average warmest and coolest month · day to night: 13°C
- Months averaging 30°C or hotter: 7
- Average humidity: 34%
Temperatures through the year
January bottoms out at 65°F (19°C) in daylight, 43°F (6°C) after dark. At its warmest, in July, Mesa runs to 106°F (41°C) in the afternoon and back to 84°F (29°C) by dawn. Relative humidity averages 34% across the year, drier than almost anywhere else we cover.
Rain, sun and snow
The wettest month is January (1.6 inches (42 mm) across 5 days) and the driest May. Five of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is November through March. The gridded 2015-2024 daily record for this location tops out at 118°F (48°C) and bottoms at 26°F (-4°C) - decade extremes, not all-time station records.
Season by season
Spring (March through May)
Spring is hot here - highs near 85°F (30°C), nights near 59°F (15°C), and precipitation is sparse, near 1.4 inches (35 mm) for the season. Daylight is generous - around 12.0 hours of sun a day.
Summer (June through August)
Through summer, Mesa turns very hot: 105°F (40°C) by day, 81°F (27°C) after dark, and rain comes on about 11 days over the three months. Daylight is generous - around 12.4 hours of sun a day.
Fall (September through November)
Fall is hot here - highs near 88°F (31°C), nights near 64°F (18°C), and precipitation is sparse, near 2.6 inches (65 mm) for the season. Daylight is generous - around 10.4 hours of sun a day.
Winter (December through February)
Winter stays on the cool side of mild here - highs near 67°F (20°C), nights near 45°F (7°C), and rain comes 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% |