Phoenix, AZ Weather
Phoenix hourly forecast: next 24 hours
Today's high of 107°F (42°C) is about 3°F (2°C) above the typical August high of 104°F (40°C).
Current conditions in detail
Phoenix weather tomorrow (Friday, August 28)
Tomorrow in Phoenix looks overcast, with a high of 107° and an overnight low of 93°. Precipitation chance is modest at 36%. Winds top out near 11 mph, and the UV index reaches 10 (very high).
Phoenix 14-day forecast
About the weather in Phoenix
Phoenix works on a dry budget: 11.1 inches (282 mm) of precipitation a year, spread over roughly 34 days. Temperature does the varying instead, from 65°F (18°C) on a typical January afternoon to 106°F (41°C) in July, with nights 14°C below the day.
Phoenix weather: quick facts
- Hottest month: July - highs near 106°F (41°C)
- Coldest month: January - highs near 65°F (18°C)
- Decade extremes (2015-2024): 118°F (48°C) high · 28°F (-2°C) low
- Wettest month: July (5 rainy days) · Sunniest: June (13.2 h sun/day)
- Climate type: semi-arid
- Annual swing: 24°C between the average warmest and coolest month · day to night: 14°C
- Months averaging 30°C or hotter: 7
- Average humidity: 34%
Temperatures through the year
Warmth peaks in July: highs of 106°F (41°C), lows of 84°F (29°C). January bottoms out at 65°F (18°C) in daylight, 42°F (6°C) after dark. Five of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is November through March.
Rain, sun and snow
Between the average July and the average January lie 24°C, a wider spread than roughly 77% of the cities we track. Precipitation concentrates in July - 1.9 inches (49 mm) on 5 days - and thins out by May. The gridded 2015-2024 daily record for this location tops out at 118°F (48°C) and bottoms at 28°F (-2°C) - decade extremes, not all-time station records.
Season by season
Spring (March through May)
Spring brings hot afternoons here - highs near 86°F (30°C), nights near 59°F (15°C), and precipitation is sparse, near 1.3 inches (34 mm) for the season. Daylight is generous - around 12.0 hours of sun a day.
Summer (June through August)
Summer brings serious heat here - highs near 105°F (41°C), nights near 82°F (28°C), and rain comes on about 11 days over the three months. Daylight is generous - around 12.5 hours of sun a day.
Fall (September through November)
Through fall, Phoenix sits firmly in the heat: 88°F (31°C) by day, 64°F (18°C) after dark, and precipitation is sparse, near 2.5 inches (63 mm) for the season. Daylight is generous - around 10.4 hours of sun a day.
Winter (December through February)
Winter in Phoenix is crisp but comfortable, with daytime highs averaging 67°F (20°C) and nights around 44°F (6°C); rain comes 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% |