Tomorrow in Phoenix looks
sunny, with a high of 109°
and an overnight low of 92°.
Precipitation chance is modest at 17%.
Winds top out near 13 mph,
and the UV index reaches 10 (very high).
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
Monthly averages for Phoenix based on 2015–2024 weather data.
July is the hottest month in Phoenix, with average highs of 106°F (41°C) and overnight lows near 84°F (29°C). In the past decade the temperature has peaked at 118°F (48°C).
What is the coldest month in Phoenix?
January is the coldest month, with highs averaging 65°F (18°C) and lows around 42°F (6°C). The lowest reading in recent years was 28°F (-2°C).
What is the rainiest month in Phoenix?
July is typically the wettest month, averaging 1.9 inches (49 mm) of precipitation across about 5 days. May is usually the driest.
Does it snow in Phoenix?
Snow is essentially absent in Phoenix - the 2015–2024 record shows no regular measurable snowfall.
What is the best time to visit Phoenix?
The best time to visit Phoenix is generally November to March, when temperatures are at their most comfortable before or after the peak heat. Daytime temperatures in that window typically sit near 71°F (22°C).
How sunny is Phoenix?
Phoenix averages 10.9 hours of sunshine per day across the year. June is the sunniest month at about 13.2 hours of sun a day.
Is Phoenix humid?
Relative humidity in Phoenix averages about 34% over the year, which feels dry. The most comfortable months tend to fall in the drier part of the year.