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Winslow, Arizona climate
BWk Cold desert
Winslow has a seasonal mild-temperate climate (Cold desert, Köppen BWk). The hottest month is July with an average daily high near 95°F, while the coldest is December averaging around 22°F at night. Precipitation totals about 7 inches a year and is strongly seasonal — August alone averages 1.2 inches while June barely receives 0.14 inches.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Winslow climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 50 | 56 | 65 | 72 | 81 | 92 | 95 | 92 | 86 | 74 | 60 | 49 |
| Avg temp (°F) | 36 | 41 | 48 | 55 | 64 | 74 | 79 | 77 | 70 | 57 | 45 | 35 |
| Avg low (°F) | 22 | 26 | 32 | 38 | 46 | 55 | 64 | 63 | 54 | 40 | 29 | 22 |
| Precipitation (in) | 0.5 | 0.4 | 0.5 | 0.3 | 0.3 | 0.1 | 0.9 | 1.2 | 0.9 | 0.5 | 0.5 | 0.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 50 | 56 | 65 | 72 | 81 | 92 |
| Avg temp (°F) | 36 | 41 | 48 | 55 | 64 | 74 |
| Avg low (°F) | 22 | 26 | 32 | 38 | 46 | 55 |
| Precipitation (in) | 0.5 | 0.4 | 0.5 | 0.3 | 0.3 | 0.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 95 | 92 | 86 | 74 | 60 | 49 |
| Avg temp (°F) | 79 | 77 | 70 | 57 | 45 | 35 |
| Avg low (°F) | 64 | 63 | 54 | 40 | 29 | 22 |
| Precipitation (in) | 0.9 | 1.2 | 0.9 | 0.5 | 0.5 | 0.5 |
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 | 4 | 3 | 3 | 1 | 6 | 8 | 5 | 3 | 3 | 4 |
| Days with high ≥ 90°F (days) | — | — | — | 0.2 | 5 | 21 | 26 | 20 | 8 | 0.4 | — | — |
| Days with low ≤ 32°F (days) | 28 | 23 | 18 | 8 | 0.9 | — | — | — | 0.0 | 6 | 21 | 28 |
| Days with snowfall ≥ 1 in (days) | 0.1 | — | 0.1 | — | — | — | — | — | — | — | 0.1 | 0.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 4 | 4 | 4 | 3 | 3 | 1 |
| Days with high ≥ 90°F (days) | — | — | — | 0.2 | 5 | 21 |
| Days with low ≤ 32°F (days) | 28 | 23 | 18 | 8 | 0.9 | — |
| Days with snowfall ≥ 1 in (days) | 0.1 | — | 0.1 | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 6 | 8 | 5 | 3 | 3 | 4 |
| Days with high ≥ 90°F (days) | 26 | 20 | 8 | 0.4 | — | — |
| Days with low ≤ 32°F (days) | — | — | 0.0 | 6 | 21 | 28 |
| Days with snowfall ≥ 1 in (days) | — | — | — | — | 0.1 | 0.1 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 49 | 48 | 46 | 44 | 39 | 29 | 50 | 49 | 32 | 32 | 38 | 49 |
| Relative humidity (%) | 58 | 54 | 47 | 38 | 33 | 24 | 37 | 43 | 41 | 41 | 48 | 57 |
| Wind speed (mph) | 4.8 | 5.8 | 6.4 | 7.4 | 6.9 | 6.7 | 5.3 | 4.6 | 4.9 | 5.1 | 4.9 | 4.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 49 | 48 | 46 | 44 | 39 | 29 |
| Relative humidity (%) | 58 | 54 | 47 | 38 | 33 | 24 |
| Wind speed (mph) | 4.8 | 5.8 | 6.4 | 7.4 | 6.9 | 6.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 50 | 49 | 32 | 32 | 38 | 49 |
| Relative humidity (%) | 37 | 43 | 41 | 41 | 48 | 57 |
| Wind speed (mph) | 5.3 | 4.6 | 4.9 | 5.1 | 4.9 | 4.7 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Winslow AP (NOAA GHCN station USW00023194), about 2 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.