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Clayton, Alabama climate
Cfa Humid subtropical
Clayton has a seasonal warm-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is July with an average daily high near 91°F, while the coldest is January averaging around 37°F at night. Precipitation is fairly even year-round, totalling about 56 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)Clayton climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 58 | 63 | 70 | 77 | 84 | 89 | 91 | 90 | 86 | 78 | 68 | 60 |
| Avg temp (°F) | 48 | 51 | 58 | 64 | 72 | 79 | 81 | 81 | 76 | 67 | 57 | 50 |
| Avg low (°F) | 37 | 40 | 46 | 52 | 61 | 69 | 71 | 71 | 66 | 55 | 45 | 40 |
| Precipitation (in) | 4.6 | 5.2 | 5.2 | 5.0 | 3.7 | 4.9 | 6.0 | 4.5 | 3.7 | 3.3 | 3.8 | 5.6 |
| Snowfall (in) | 0.2 | — | — | — | — | — | — | — | — | — | — | 0.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 58 | 63 | 70 | 77 | 84 | 89 |
| Avg temp (°F) | 48 | 51 | 58 | 64 | 72 | 79 |
| Avg low (°F) | 37 | 40 | 46 | 52 | 61 | 69 |
| Precipitation (in) | 4.6 | 5.2 | 5.2 | 5.0 | 3.7 | 4.9 |
| Snowfall (in) | 0.2 | — | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 91 | 90 | 86 | 78 | 68 | 60 |
| Avg temp (°F) | 81 | 81 | 76 | 67 | 57 | 50 |
| Avg low (°F) | 71 | 71 | 66 | 55 | 45 | 40 |
| Precipitation (in) | 6.0 | 4.5 | 3.7 | 3.3 | 3.8 | 5.6 |
| Snowfall (in) | — | — | — | — | — | 0.3 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 8 | 8 | 7 | 6 | 5 | 10 | 9 | 9 | 6 | 4 | 5 | 7 |
| Days with high ≥ 90°F (days) | — | — | — | 0.1 | 5 | 13 | 20 | 18 | 10 | 0.5 | 0.0 | — |
| Days with low ≤ 32°F (days) | 13 | 8 | 4 | 0.6 | 0.0 | — | — | — | — | 0.6 | 5 | 10 |
| Days with snowfall ≥ 1 in (days) | 0.0 | — | — | — | — | — | — | — | — | — | — | 0.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 8 | 8 | 7 | 6 | 5 | 10 |
| Days with high ≥ 90°F (days) | — | — | — | 0.1 | 5 | 13 |
| Days with low ≤ 32°F (days) | 13 | 8 | 4 | 0.6 | 0.0 | — |
| Days with snowfall ≥ 1 in (days) | 0.0 | — | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 9 | 9 | 6 | 4 | 5 | 7 |
| Days with high ≥ 90°F (days) | 20 | 18 | 10 | 0.5 | 0.0 | — |
| Days with low ≤ 32°F (days) | — | — | — | 0.6 | 5 | 10 |
| Days with snowfall ≥ 1 in (days) | — | — | — | — | — | 0.0 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 58 | 58 | 55 | 51 | 51 | 57 | 57 | 55 | 48 | 42 | 46 | 56 |
| Relative humidity (%) | 83 | 83 | 81 | 78 | 74 | 73 | 74 | 74 | 73 | 73 | 77 | 83 |
| Wind speed (mph) | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 58 | 58 | 55 | 51 | 51 | 57 |
| Relative humidity (%) | 83 | 83 | 81 | 78 | 74 | 73 |
| Wind speed (mph) | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 57 | 55 | 48 | 42 | 46 | 56 |
| Relative humidity (%) | 74 | 74 | 73 | 73 | 77 | 83 |
| Wind speed (mph) | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Clayton (NOAA GHCN station USC00011725), inside the city.
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.