Phoenix, AZ Weather
Phoenix hourly forecast: next 24 hours
Today's high of 105°F (41°C) is right in line with the typical August high of 104°F (40°C).
Current conditions in detail
Phoenix weather tomorrow (Wednesday, August 19)
Tomorrow in Phoenix looks sunny, with a high of 106° and an overnight low of 91°. Rain is unlikely (3% chance). Winds top out near 13 mph, and the UV index reaches 10 (very high).
Phoenix 14-day forecast
About the weather in Phoenix
Weather in Phoenix is shaped by its semi-arid climate - expect big day-to-night temperature swings and modest rainfall. July afternoons typically reach 106°F (41°C), while January highs hover near 65°F (18°C). Annual precipitation averages 11.1 inches (282 mm) over about 34 rainy days.
Phoenix weather: quick facts
- Hottest month: July - highs near 106°F (41°C)
- Coldest month: January - highs near 65°F (18°C)
- Record high: 118°F (48°C) · Record low: 28°F (-2°C) (2015–2024)
- Wettest month: July (5 rainy days) · Sunniest: June (13.2 h sun/day)
- Climate type: semi-arid - big day-to-night temperature swings and modest rainfall
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 106°F (41°C) and overnight lows stay near 84°F (29°C). The coolest month is January, with typical highs of 65°F (18°C) and lows around 42°F (6°C). Based on 2015–2024 weather data, temperatures have reached as high as 118°F (48°C) and dropped as low as 28°F (-2°C).
Rain, sun and snow
July is usually the wettest month. It brings about 1.9 inches (49 mm) of rain over 5 days, while May is the driest. June brings the most sunshine, averaging 13.2 hours of sun a day.
Season by season
Spring (March through May)
Spring in Phoenix is hot, with daytime highs averaging 86°F (30°C) and nights around 59°F (15°C); precipitation is infrequent.
Summer (June through August)
Summer in Phoenix brings serious heat, with daytime highs averaging 105°F (41°C) and nights around 82°F (28°C); rain falls on about 11 days over the three months.
Fall (September through November)
Fall in Phoenix brings hot afternoons, with daytime highs averaging 88°F (31°C) and nights around 64°F (18°C); precipitation is infrequent.
Winter (December through February)
Winter in Phoenix is mild, with daytime highs averaging 67°F (20°C) and nights around 44°F (6°C); rain falls on about 11 days over the three months.
Average temperatures in Phoenix by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 65° | 42° | 4 | 1.3 in | 8.5 h/day | 55% |
| February | 70° | 45° | 3 | 1.2 in | 9.7 h/day | 46% |
| March | 77° | 51° | 3 | 1.1 in | 10.6 h/day | 37% |
| April | 87° | 59° | 1 | 0.2 in | 12.5 h/day | 21% |
| May | 93° | 67° | 1 | 0.1 in | 12.9 h/day | 19% |
| June | 105° | 78° | 1 | 0.2 in | 13.2 h/day | 17% |
| July | 106° | 84° | 5 | 1.9 in | 12.1 h/day | 31% |
| August | 104° | 83° | 5 | 1.4 in | 12.2 h/day | 35% |
| September | 100° | 76° | 3 | 0.9 in | 11.4 h/day | 33% |
| October | 89° | 64° | 2 | 1.0 in | 10.5 h/day | 32% |
| November | 76° | 51° | 2 | 0.6 in | 9.4 h/day | 36% |
| December | 66° | 44° | 4 | 1.3 in | 8.2 h/day | 50% |