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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 33°C, while the coldest is January averaging around 3°C at night. Precipitation is fairly even year-round, totalling about 1413 mm.
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 (°C) | 15 | 17 | 21 | 25 | 29 | 32 | 33 | 32 | 30 | 26 | 20 | 16 |
| Avg temp (°C) | 9 | 11 | 14 | 18 | 22 | 26 | 27 | 27 | 25 | 19 | 14 | 10 |
| Avg low (°C) | 3 | 5 | 8 | 11 | 16 | 20 | 22 | 22 | 19 | 13 | 7 | 4 |
| Precipitation (mm) | 116 | 133 | 132 | 126 | 94 | 125 | 153 | 115 | 93 | 85 | 97 | 143 |
| Snowfall (cm) | 1 | — | — | — | — | — | — | — | — | — | — | 1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 15 | 17 | 21 | 25 | 29 | 32 |
| Avg temp (°C) | 9 | 11 | 14 | 18 | 22 | 26 |
| Avg low (°C) | 3 | 5 | 8 | 11 | 16 | 20 |
| Precipitation (mm) | 116 | 133 | 132 | 126 | 94 | 125 |
| Snowfall (cm) | 1 | — | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 33 | 32 | 30 | 26 | 20 | 16 |
| Avg temp (°C) | 27 | 27 | 25 | 19 | 14 | 10 |
| Avg low (°C) | 22 | 22 | 19 | 13 | 7 | 4 |
| Precipitation (mm) | 153 | 115 | 93 | 85 | 97 | 143 |
| Snowfall (cm) | — | — | — | — | — | 1 |
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 ≥ 32°C (days) | — | — | — | 0.1 | 5 | 13 | 20 | 18 | 10 | 0.5 | 0.0 | — |
| Days with low ≤ 0°C (days) | 13 | 8 | 4 | 0.6 | 0.0 | — | — | — | — | 0.6 | 5 | 10 |
| Days with snowfall ≥ 2.5 cm (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 ≥ 32°C (days) | — | — | — | 0.1 | 5 | 13 |
| Days with low ≤ 0°C (days) | 13 | 8 | 4 | 0.6 | 0.0 | — |
| Days with snowfall ≥ 2.5 cm (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 ≥ 32°C (days) | 20 | 18 | 10 | 0.5 | 0.0 | — |
| Days with low ≤ 0°C (days) | — | — | — | 0.6 | 5 | 10 |
| Days with snowfall ≥ 2.5 cm (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.