Peoria, AZ Climate & Monthly Averages
Peoria has a semi-arid climate. July is the hottest month, averaging 106° by day; January is the coldest at 65°.
Peoria's climate runs on sunshine and sparse rain
With 10.1 inches (257 mm) of annual precipitation, Peoria is one of the drier places we cover. July is the wettest month it gets, at 1.6 inches (40 mm), and the year runs between 65°F (18°C) and 106°F (41°C) by day.
What the dry climate changes
Five of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is November through March. January bottoms out at 65°F (18°C) in daylight, 43°F (6°C) after dark. At its warmest, in July, Peoria runs to 106°F (41°C) in the afternoon and back to 84°F (29°C) by dawn.
Across the gridded 2015-2024 daily record, the highest daily maximum for this location was 119°F (48°C) and the lowest daily minimum 28°F (-2°C). Between the average July and the average January lie 24°C, a wider spread than roughly 77% of the cities we track.
Days and nights are about 13°C apart on average - wider than 96% of the 3496 cities in our dataset.
More climate facts for Peoria
- Hottest month: July - highs near 106°F (41°C)
- Coldest month: January - highs near 65°F (18°C)
- Decade extremes (2015-2024): 119°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: 13°C
- Months averaging 30°C or hotter: 7
- Average humidity: 34%
Heat, cold and scarce precipitation in the dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.
When the dry weather is easiest to use
Avoiding the hardest heat or cold
The best time to visit Peoria is generally November to March, when temperatures sit either side of the peak heat rather than in it. Daytime temperatures in that window sit near 71°F (21°C), with rain on about 3 days a month. For the same question asked the other way round, see where else is warm in November.
Prepare for sun and cooler nights
Pack for Peoria with lightweight, breathable clothing and serious sun protection. July nights average 84°F (29°C), so evenings rarely match the afternoons.
Monthly heat and rainfall table
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 65° | 43° | 4 | 1.3 in | 8.5 h/day | 10.2 h | 14% | 55% |
| February | 70° | 46° | 3 | 1.2 in | 9.7 h/day | 10.9 h | 11% | 45% |
| March | 76° | 51° | 3 | 1.2 in | 10.6 h/day | 11.9 h | 10% | 37% |
| April | 86° | 60° | 1 | 0.1 in | 12.5 h/day | 13.0 h | 3% | 21% |
| May | 93° | 67° | 1 | 0.1 in | 12.9 h/day | 13.9 h | 3% | 19% |
| June | 104° | 78° | 1 | 0.2 in | 13.2 h/day | 14.4 h | 2% | 17% |
| July | 106° | 84° | 5 | 1.6 in | 12.1 h/day | 14.2 h | 15% | 30% |
| August | 104° | 83° | 3 | 1.1 in | 12.2 h/day | 13.4 h | 11% | 34% |
| September | 99° | 77° | 4 | 0.8 in | 11.3 h/day | 12.3 h | 12% | 32% |
| October | 89° | 64° | 2 | 0.8 in | 10.6 h/day | 11.3 h | 6% | 32% |
| November | 76° | 52° | 2 | 0.5 in | 9.4 h/day | 10.4 h | 5% | 35% |
| December | 66° | 44° | 4 | 1.2 in | 8.3 h/day | 9.9 h | 12% | 48% |
How daytime heat and cool nights change by month
Each card shows the average high and low. The bar places that month between Peoria's coldest night and warmest afternoon.
January
- Rain
- 4 days
- Sunshine
- 8.5 h
- Daylight
- 10.2 h
February
- Rain
- 3 days
- Sunshine
- 9.7 h
- Daylight
- 10.9 h
March
- Rain
- 3 days
- Sunshine
- 10.6 h
- Daylight
- 11.9 h
April
- Rain
- 1 day
- Sunshine
- 12.5 h
- Daylight
- 13.0 h
May
- Rain
- 1 day
- Sunshine
- 12.9 h
- Daylight
- 13.9 h
June
- Rain
- 1 day
- Sunshine
- 13.2 h
- Daylight
- 14.4 h
July
- Rain
- 5 days
- Sunshine
- 12.1 h
- Daylight
- 14.2 h
August
- Rain
- 3 days
- Sunshine
- 12.2 h
- Daylight
- 13.4 h
September
- Rain
- 4 days
- Sunshine
- 11.3 h
- Daylight
- 12.3 h
October
- Rain
- 2 days
- Sunshine
- 10.6 h
- Daylight
- 11.3 h
November
- Rain
- 2 days
- Sunshine
- 9.4 h
- Daylight
- 10.4 h
December
- Rain
- 4 days
- Sunshine
- 8.3 h
- Daylight
- 9.9 h
Looking for warmer alternatives? Browse warm places by month, or compare Peoria's coolest part of the year: January, December, February.
Heat and cold across the Peoria year
Spring (March through May)
Spring runs hot here - highs near 85°F (30°C), nights near 59°F (15°C), and precipitation is sparse, near 1.4 inches (37 mm) for the season. Daylight is generous - around 12.0 hours of sun a day.
Summer (June through August)
Summer runs at full heat here - highs near 105°F (40°C), nights near 82°F (28°C), and rain comes on about 9 days over the three months. Daylight is generous - around 12.5 hours of sun a day.
Fall (September through November)
Fall runs hot here - highs near 88°F (31°C), nights near 64°F (18°C), and precipitation is sparse, near 2.1 inches (54 mm) for the season. Daylight is generous - around 10.4 hours of sun a day.
Winter (December through February)
Through winter, Peoria is mild: 67°F (19°C) by day, 44°F (7°C) after dark, and rain comes on about 11 days over the three months.
How unusual is Peoria?
- Relative humidity averages 34% - drier than almost every other city we track.
- Rain or snow reaches the ground on 32 days a year - fewer wet days than all but 4% of the 3496 cities we track.
- Annual precipitation is 10.1 inches (257 mm) - drier than all but 6% of the 3496 cities we track.
These comparisons use the same ten-year window for every city in the dataset.