WeatherArchive / Climate averages / Phoenix
Phoenix climate: average weather by month
Phoenix averages 73°F (23°C) over the year. July is warmest, with highs around 106°F (41°C); January is coldest, with lows near 41°F (5°C). About 10 inches (243 mm) of precipitation falls on roughly 30 days a year, from 30 years of ERA5 data (1996–2025).
| Month | Avg high | Avg low | Precip. | Days ≥1 mm | Sunshine / day |
|---|---|---|---|---|---|
| January | 18.9°C | 5.0°C | 27.5 mm | 3.2 | 8.9 h |
| February | 20.8°C | 6.6°C | 30.8 mm | 3.5 | 9.8 h |
| March | 25.0°C | 9.8°C | 22.2 mm | 2.7 | 10.9 h |
| April | 29.5°C | 14.0°C | 6.7 mm | 1.1 | 12.4 h |
| May | 34.6°C | 19.4°C | 3.2 mm | 0.6 | 13.0 h |
| June | 40.1°C | 24.9°C | 3.0 mm | 0.5 | 13.5 h |
| July | 40.9°C | 28.6°C | 28.8 mm | 4.0 | 12.6 h |
| August | 40.0°C | 27.9°C | 26.0 mm | 4.0 | 12.5 h |
| September | 37.2°C | 24.0°C | 27.8 mm | 3.3 | 11.6 h |
| October | 31.1°C | 16.6°C | 24.7 mm | 2.1 | 10.6 h |
| November | 24.3°C | 10.1°C | 16.0 mm | 1.9 | 9.4 h |
| December | 18.4°C | 5.3°C | 26.7 mm | 3.5 | 8.5 h |
Record high 1996–2025: 47.7°C on 2016-06-19. Record low: -3.5°C on 2007-01-14.
Source: Open-Meteo Historical Weather API (CC BY 4.0). Values are ERA5 reanalysis model data on a ~9–25 km grid, not readings from a weather station, so a single town’s thermometer can differ by a few degrees and local showers can be missed. Grid cell 33.43, -112.03 at 333 m. For snowfall, humidity and a best-time-to-visit score, open Phoenix in the climate tool.