Tucson, AZ Weather
Tucson hourly forecast: next 24 hours
Today's high of 100°F (38°C) is right in line with the typical July high of 100°F (38°C).
Current conditions in detail
Tucson weather tomorrow (Saturday, July 18)
Tomorrow in Tucson looks sunny, with a high of 96° and an overnight low of 81°. Precipitation chance is modest at 36%. Winds top out near 13 mph, and the UV index reaches 12 (extreme).
Tucson 14-day forecast
About the weather in Tucson
Tucson has a semi-arid climate, marked by big day-to-night temperature swings and modest rainfall. Average daytime highs range from about 64°F (18°C) in January to around 100°F (38°C) in July, and the city records roughly 45 days of measurable precipitation a year.
Tucson weather: quick facts
- Hottest month: July - highs near 100°F (38°C)
- Coldest month: January - highs near 64°F (18°C)
- Record high: 113°F (45°C) · Record low: 26°F (-3°C) (2015–2024)
- Wettest month: July (8 rainy days) · Sunniest: May (12.9 h sun/day)
- Climate type: semi-arid - big day-to-night temperature swings and modest rainfall
- Snow: about 1 days a year
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 100°F (38°C) and overnight lows stay near 78°F (26°C). The coolest month is January, with typical highs of 64°F (18°C) and lows around 41°F (5°C). Based on 2015–2024 weather data, temperatures have reached as high as 113°F (45°C) and dropped as low as 26°F (-3°C).
Rain, sun and snow
July is usually the wettest month. It brings about 2.0 inches (52 mm) of rain over 8 days, while May is the driest. May brings the most sunshine, averaging 12.9 hours of sun a day. Snowfall is rare but not unheard of.
Season by season
Spring (March through May)
Spring in Tucson is hot, with daytime highs averaging 83°F (28°C) and nights around 56°F (13°C); precipitation is infrequent.
Summer (June through August)
Summer in Tucson is intensely hot, with daytime highs averaging 100°F (38°C) and nights around 76°F (25°C); rain falls on about 15 days over the three months.
Fall (September through November)
Fall in Tucson runs hot, with daytime highs averaging 85°F (30°C) and nights around 61°F (16°C); rain falls on about 10 days over the three months.
Winter (December through February)
Winter in Tucson is mild, with daytime highs averaging 66°F (19°C) and nights around 42°F (6°C); rain falls on about 14 days over the three months.
Average temperatures in Tucson by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 64° | 41° | 5 | 1.8 in | 9.0 h/day | 53% |
| February | 68° | 43° | 4 | 1.4 in | 9.8 h/day | 44% |
| March | 75° | 49° | 4 | 1.2 in | 10.6 h/day | 36% |
| April | 84° | 56° | 1 | 0.2 in | 12.5 h/day | 22% |
| May | 91° | 63° | 1 | 0.1 in | 12.9 h/day | 20% |
| June | 101° | 74° | 2 | 0.3 in | 12.9 h/day | 20% |
| July | 100° | 78° | 8 | 2.0 in | 11.8 h/day | 39% |
| August | 98° | 76° | 6 | 1.6 in | 11.9 h/day | 44% |
| September | 94° | 71° | 5 | 1.9 in | 11.3 h/day | 40% |
| October | 87° | 61° | 3 | 0.6 in | 10.7 h/day | 34% |
| November | 75° | 50° | 3 | 0.7 in | 9.5 h/day | 38% |
| December | 66° | 43° | 5 | 1.4 in | 8.7 h/day | 48% |