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Prescott, Arizona climate
Csa Hot-summer Mediterranean
Prescott has a seasonal mild-temperate climate (Hot-summer Mediterranean, Köppen Csa). The hottest month is July with an average daily high near 32°C, while the coldest is December averaging around −5°C at night. Precipitation totals about 418 mm a year and is strongly seasonal — August alone averages 71 mm while June barely receives 6 mm. Light snow accumulates each winter (26 cm of snow per year on average).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation split into rain and snow · 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 countsPrescott climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 11 | 13 | 16 | 20 | 25 | 31 | 32 | 31 | 28 | 23 | 16 | 11 |
| Avg temp (°C) | 3 | 5 | 8 | 11 | 16 | 21 | 24 | 23 | 20 | 14 | 8 | 3 |
| Avg low (°C) | −5 | −3 | 0 | 3 | 7 | 12 | 16 | 15 | 11 | 5 | −1 | −5 |
| Precipitation (mm) | 39 | 45 | 37 | 14 | 13 | 6 | 68 | 71 | 42 | 24 | 22 | 37 |
| Snowfall (cm) | 5 | 8 | 6 | 1 | — | — | — | — | — | — | 2 | 4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 11 | 13 | 16 | 20 | 25 | 31 |
| Avg temp (°C) | 3 | 5 | 8 | 11 | 16 | 21 |
| Avg low (°C) | −5 | −3 | 0 | 3 | 7 | 12 |
| Precipitation (mm) | 39 | 45 | 37 | 14 | 13 | 6 |
| Snowfall (cm) | 5 | 8 | 6 | 1 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 32 | 31 | 28 | 23 | 16 | 11 |
| Avg temp (°C) | 24 | 23 | 20 | 14 | 8 | 3 |
| Avg low (°C) | 16 | 15 | 11 | 5 | −1 | −5 |
| Precipitation (mm) | 68 | 71 | 42 | 24 | 22 | 37 |
| Snowfall (cm) | — | — | — | — | 2 | 4 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 5 | 6 | 5 | 3 | 3 | 2 | 10 | 10 | 6 | 4 | 4 | 5 |
| Days with high ≥ 32°C (days) | — | — | — | — | 1 | 12 | 17 | 11 | 3 | 0.2 | — | — |
| Days with low ≤ 0°C (days) | 27 | 23 | 17 | 7 | 0.9 | — | — | — | 0.1 | 4 | 18 | 27 |
| Days with snowfall ≥ 2.5 cm (days) | 0.8 | 0.8 | 0.7 | 0.2 | — | — | — | — | — | — | 0.2 | 0.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 5 | 6 | 5 | 3 | 3 | 2 |
| Days with high ≥ 32°C (days) | — | — | — | — | 1 | 12 |
| Days with low ≤ 0°C (days) | 27 | 23 | 17 | 7 | 0.9 | — |
| Days with snowfall ≥ 2.5 cm (days) | 0.8 | 0.8 | 0.7 | 0.2 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 10 | 10 | 6 | 4 | 4 | 5 |
| Days with high ≥ 32°C (days) | 17 | 11 | 3 | 0.2 | — | — |
| Days with low ≤ 0°C (days) | — | — | 0.1 | 4 | 18 | 27 |
| Days with snowfall ≥ 2.5 cm (days) | — | — | — | — | 0.2 | 0.7 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 44 | 45 | 40 | 34 | 29 | 21 | 46 | 44 | 29 | 28 | 33 | 43 |
| Clear days (≤ 30% cloud) | 14 | 12 | 14 | 15 | 19 | 22 | 11 | 12 | 19 | 20 | 17 | 13 |
| Partly cloudy days (30–70%) | 9 | 8 | 9 | 10 | 9 | 5 | 11 | 12 | 8 | 6 | 8 | 9 |
| Cloudy days (≥ 70%) | 9 | 9 | 7 | 4 | 4 | 3 | 9 | 7 | 4 | 5 | 5 | 9 |
| Relative humidity (%) | 56 | 55 | 49 | 40 | 33 | 23 | 38 | 45 | 42 | 40 | 46 | 54 |
| Wind speed (m/s) | 1.9 | 2.0 | 2.1 | 2.3 | 2.2 | 2.2 | 1.8 | 1.6 | 1.8 | 1.9 | 1.8 | 1.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 44 | 45 | 40 | 34 | 29 | 21 |
| Clear days (≤ 30% cloud) | 14 | 12 | 14 | 15 | 19 | 22 |
| Partly cloudy days (30–70%) | 9 | 8 | 9 | 10 | 9 | 5 |
| Cloudy days (≥ 70%) | 9 | 9 | 7 | 4 | 4 | 3 |
| Relative humidity (%) | 56 | 55 | 49 | 40 | 33 | 23 |
| Wind speed (m/s) | 1.9 | 2.0 | 2.1 | 2.3 | 2.2 | 2.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 46 | 44 | 29 | 28 | 33 | 43 |
| Clear days (≤ 30% cloud) | 11 | 12 | 19 | 20 | 17 | 13 |
| Partly cloudy days (30–70%) | 11 | 12 | 8 | 6 | 8 | 9 |
| Cloudy days (≥ 70%) | 9 | 7 | 4 | 5 | 5 | 9 |
| Relative humidity (%) | 38 | 45 | 42 | 40 | 46 | 54 |
| Wind speed (m/s) | 1.8 | 1.6 | 1.8 | 1.9 | 1.8 | 1.8 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Prescott (NOAA GHCN station USC00026796), about 5 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.