WeatherArchive / Climate averages / Phoenix
Phoenix weather by month: climate averages
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.
Phoenix weather month by month
The wettest month in Phoenix is February, averaging 1.2 in (31 mm); the driest is June at 0.1 in (3 mm). July has the most days with at least 1 mm of rain (about 4). June is the sunniest month, with about 13.5 hours of sunshine a day, against 8.5 hours in December. If you like average highs between 64 °F and 82 °F (18–28 °C) with few rainy days, aim for January, March and November.
Planning a particular day? See how often that date was wet or hot over 30 years with the event weather odds, or look up what the weather actually was on any past date in the historical weather archive.
Questions people ask
What is the warmest month in Phoenix?
July, with an average daily high of 106°F (41°C) over 1996–2025.
What is the coldest month in Phoenix?
January, when nights average about 41°F (5°C).
What is the rainiest month in Phoenix?
February has the most precipitation (about 1.2 in (31 mm)), and July has the most rainy days (about 4 days with 1 mm or more). The driest month is June.
How much sunshine does Phoenix get?
About 11.1 hours of bright sunshine a day averaged over the year, from 8.5 h in December to 13.5 h in June. Sunshine here is the model’s estimate of hours with direct sun, not hours of daylight.
What is the best month to visit Phoenix for mild weather?
By average high between 64 °F and 82 °F (18–28 °C) and the fewest rainy days: January, March, November. Prices, crowds and events are not included.