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Maricopa, Arizona climate
BWh Hot desert
Maricopa has a seasonal warm-temperate climate (Hot desert, Köppen BWh). The hottest month is July with an average daily high near 43°C, while the coldest is December averaging around 2°C at night. Precipitation totals about 181 mm a year and is strongly seasonal — August alone averages 26 mm while June barely receives 2 mm.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsMaricopa climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 21 | 23 | 27 | 31 | 36 | 42 | 43 | 42 | 39 | 33 | 26 | 20 |
| Avg temp (°C) | 12 | 14 | 17 | 21 | 26 | 31 | 34 | 34 | 30 | 23 | 16 | 11 |
| Avg low (°C) | 3 | 4 | 7 | 10 | 15 | 20 | 25 | 25 | 21 | 13 | 6 | 2 |
| Precipitation (mm) | 20 | 20 | 23 | 5 | 6 | 2 | 17 | 26 | 17 | 12 | 13 | 19 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 21 | 23 | 27 | 31 | 36 | 42 |
| Avg temp (°C) | 12 | 14 | 17 | 21 | 26 | 31 |
| Avg low (°C) | 3 | 4 | 7 | 10 | 15 | 20 |
| Precipitation (mm) | 20 | 20 | 23 | 5 | 6 | 2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 43 | 42 | 39 | 33 | 26 | 20 |
| Avg temp (°C) | 34 | 34 | 30 | 23 | 16 | 11 |
| Avg low (°C) | 25 | 25 | 21 | 13 | 6 | 2 |
| Precipitation (mm) | 17 | 26 | 17 | 12 | 13 | 19 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 4 | 4 | 3 | 1 | 0.7 | 0.5 | 4 | 4 | 3 | 2 | 2 | 3 |
| Days with high ≥ 32°C (days) | — | — | 3 | 13 | 27 | 30 | 31 | 31 | 29 | 17 | 2 | — |
| Days with low ≤ 0°C (days) | 11 | 5 | 1 | 0.1 | — | — | — | — | — | 0.2 | 2 | 11 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 4 | 4 | 3 | 1 | 0.7 | 0.5 |
| Days with high ≥ 32°C (days) | — | — | 3 | 13 | 27 | 30 |
| Days with low ≤ 0°C (days) | 11 | 5 | 1 | 0.1 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 4 | 4 | 3 | 2 | 2 | 3 |
| Days with high ≥ 32°C (days) | 31 | 31 | 29 | 17 | 2 | — |
| Days with low ≤ 0°C (days) | — | — | — | 0.2 | 2 | 11 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 42 | 44 | 38 | 31 | 26 | 20 | 43 | 42 | 28 | 27 | 33 | 42 |
| Clear days (≤ 30% cloud) | 14 | 12 | 15 | 17 | 21 | 23 | 12 | 13 | 19 | 20 | 17 | 13 |
| Partly cloudy days (30–70%) | 10 | 8 | 9 | 9 | 8 | 5 | 12 | 12 | 7 | 7 | 9 | 10 |
| Cloudy days (≥ 70%) | 8 | 8 | 7 | 4 | 3 | 2 | 7 | 6 | 3 | 4 | 5 | 8 |
| Relative humidity (%) | 48 | 46 | 40 | 30 | 23 | 17 | 30 | 36 | 34 | 31 | 36 | 47 |
| Wind speed (mph) | 4.2 | 4.3 | 4.4 | 5.0 | 5.0 | 5.1 | 4.5 | 3.8 | 4.1 | 4.2 | 4.3 | 4.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 42 | 44 | 38 | 31 | 26 | 20 |
| Clear days (≤ 30% cloud) | 14 | 12 | 15 | 17 | 21 | 23 |
| Partly cloudy days (30–70%) | 10 | 8 | 9 | 9 | 8 | 5 |
| Cloudy days (≥ 70%) | 8 | 8 | 7 | 4 | 3 | 2 |
| Relative humidity (%) | 48 | 46 | 40 | 30 | 23 | 17 |
| Wind speed (mph) | 4.2 | 4.3 | 4.4 | 5.0 | 5.0 | 5.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 43 | 42 | 28 | 27 | 33 | 42 |
| Clear days (≤ 30% cloud) | 12 | 13 | 19 | 20 | 17 | 13 |
| Partly cloudy days (30–70%) | 12 | 12 | 7 | 7 | 9 | 10 |
| Cloudy days (≥ 70%) | 7 | 6 | 3 | 4 | 5 | 8 |
| Relative humidity (%) | 30 | 36 | 34 | 31 | 36 | 47 |
| Wind speed (mph) | 4.5 | 3.8 | 4.1 | 4.2 | 4.3 | 4.1 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Maricopa 4 N (NOAA GHCN station USC00025270), about 6 km from the city centre.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.