Peoria climate
Peoria (Arizona, United States) has a hot desert climate (Köppen BWh). The average temperature over the year is 23 °C74 °F, and about 193 mm7.6 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Peoria climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 1966 | 542 | 1254 | 241.0 | 1 |
| Feb | 2170 | 744 | 1457 | 241.0 | 1 |
| Mar | 2678 | 1050 | 1864 | 160.6 | 0 |
| Apr | 3086 | 1356 | 2271 | 60.2 | 0 |
| May | 3595 | 1865 | 2780 | 30.1 | 0 |
| Jun | 41106 | 2475 | 3391 | 10.0 | 0 |
| Jul | 42107 | 2882 | 3595 | 241.0 | 0 |
| Aug | 41105 | 2781 | 3493 | 281.1 | 0 |
| Sep | 38101 | 2475 | 3188 | 170.7 | 0 |
| Oct | 3189 | 1762 | 2475 | 130.5 | 0 |
| Nov | 2476 | 1151 | 1864 | 160.6 | 0 |
| Dec | 1865 | 541 | 1253 | 210.8 | 2 |
| Year | 42107 | 541 | 2374 | 1937.6 | 4 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 44% | 40% | 3.4 | 10:09 |
| Feb | 41% | 40% | 4.4 | 10:56 |
| Mar | 36% | 34% | 5.9 | 11:53 |
| Apr | 27% | 28% | 7.3 | 12:59 |
| May | 21% | 22% | 8.2 | 13:53 |
| Jun | 15% | 17% | 8.5 | 14:22 |
| Jul | 28% | 43% | 7.5 | 14:10 |
| Aug | 32% | 38% | 6.9 | 13:23 |
| Sep | 29% | 25% | 6.2 | 12:20 |
| Oct | 29% | 24% | 5.0 | 11:17 |
| Nov | 33% | 32% | 3.8 | 10:22 |
| Dec | 43% | 41% | 3.1 | 9:56 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Peoria is like
The warmest month is July, with an average high of 42 °C107 °F and a low of 28 °C82 °F. The coldest is December, when highs average 18 °C65 °F and lows 5 °C41 °F. Seasons are strongly marked: the warmest month is on average 23.2 °C41.8 °F warmer than the coldest.
It is dry, with about 193 mm7.6 in of precipitation per year. The wettest three-month stretch is December–February, which brings 36% of the annual total. Months with less than 20 mm0.8 in on average: March–June and September–November. The wettest month is August (28 mm1.1 in), the driest is June (1 mm0.0 in).
Relative humidity ranges from 15% in June to 44% in January. The clearest skies (lowest average cloud amount, 17%) are typical of June. Average wind speed near the ground ranges from 7 km/h (4 mph) in August to 9 km/h (5 mph) in June. Daylight lasts from about 9.9 hours in December to 14.4 hours in June.
Best time to visit Peoria
Based on these averages, the most comfortable months for sightseeing and outdoor activities are November–April: average highs of 18 °C65 °F to 30 °C86 °F with 6 mm0.2 in to 24 mm1.0 in of precipitation per month.
The most challenging month is July, which is hot, with average highs of 42 °C107 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Peoria
- Winter (December–February) — highs 1865 to 21 °C70 °F, lows 541 to 7 °C44 °F, about 23 mm0.9 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an extra layer for the cooler mornings and evenings.
- Spring (March–May) — highs 2678 to 35 °C95 °F, lows 1050 to 18 °C65 °F, about 8 mm0.3 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 41105 to 42 °C107 °F, lows 2475 to 28 °C82 °F, about 18 mm0.7 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
- Autumn (September–November) — highs 2476 to 38 °C101 °F, lows 1151 to 24 °C75 °F, about 15 mm0.6 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an extra layer for the cooler mornings and evenings.
How Peoria compares
Compared with Phoenix, about 21 km to the southeast, Peoria has practically the same average temperature and receives 24% less precipitation (193 mm7.6 in vs 256 mm10 in).
Of the 222 places in the United States covered by World Climates, Peoria is the 10th warmest by annual mean temperature and the 219th wettest by annual precipitation. See all of them on the United States climate page.
Places in other countries with the most similar temperature and rainfall pattern: San Luis Río Colorado (Mexico, BWh), Mexicali (Mexico, BWh) and Béchar (Algeria, BWh).
The same NASA POWER grid cell also contains Surprise (pop. 143,148). Their long-term averages in this dataset are essentially the same as for Peoria, so they do not have separate pages.
Nearby places
- Phoenix 21 km · 23 °C74 °F · 256 mm10 in
- Mesa 42 km · 23 °C74 °F · 256 mm10 in
- Tucson 194 km · 21 °C70 °F · 324 mm13 in
- Yuma 242 km · 23 °C74 °F · 99 mm3.9 in
- San Luis Río Colorado 267 km · 24 °C74 °F · 84 mm3.3 in
- Nogales 280 km · 18 °C65 °F · 359 mm14 in
- Mexicali 318 km · 24 °C76 °F · 126 mm5.0 in
- Henderson 371 km · 21 °C70 °F · 147 mm5.8 in
Frequently asked questions
What is the warmest month in Peoria?
July is the warmest month in Peoria, with an average high of 42 °C (107 °F) and an average low of 28 °C (82 °F).
What is the coldest month in Peoria?
December is the coldest month, with an average high of 18 °C (65 °F) and an average low of 5 °C (41 °F).
When does it rain the most in Peoria?
August is the wettest month with about 28 mm (1.1 in) of precipitation; June is the driest with about 1 mm (0.0 in).
What is the best time to visit Peoria?
Judging by long-term averages, the most comfortable months are November–April.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.