Summer temperatures · Arizona
How hot does Tucson get in summer?
In a typical summer, June to August, Tucson averages highs around 100°F and lows around 74°F.
About 158 days a year reach 90°F or hotter, and about 68 reach 100°F. About 227 days a year get to 80°F or warmer. That makes it the 3rd hottest summer of the 129 US cities we track.
Last updated
The hottest high in the forecast for the next 48 hours is about 72°F.
Tucson clears 80°F on about 227 days a year, and the saguaros stopped looking surprised about it a long time ago.
Live 48-hour forecast from OpenWeatherMap, refreshed about every half hour. Alerts from the National Weather Service.
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Summer at a glance
| Average summer high | 100°F |
|---|---|
| Average summer low | 74°F |
| Days a year at 80°F or warmer | 227 |
| Days a year at 90°F or hotter | 158 |
| Days a year at 100°F or hotter | 68 |
| Average winter high, for comparison | 67°F |
Summer here is June to August. Counts are averages a year.
Cities with about the same summer
- Houston, Texas: highs around 94°F, lows around 75°F
- Dallas, Texas: highs around 94°F, lows around 75°F
- Corpus Christi, Texas: highs around 93°F, lows around 75°F
More about the weather here
Source: NOAA U.S. Climate Normals, 1991 to 2020, station USW00023160.