Average annual temperature is 17.5 °C
Absolute maximum temperature: 36.5 °C
Absolute minimum temperature: -4.4 °C
Number of sunny days: 188 days
Number of rainy days: 177 days
Look at detailed online map of City of Decatur
* Weather data for City of Decatur United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 22.5 | 26.3 | 25.9 | 28.1 | 31.6 | 36.5 | 35.9 | 36.1 | 32.7 | 30.1 | 26.6 | 21.2 |
| Average daytime temperature (°C) | 14.1 | 17.4 | 18.2 | 21.2 | 26.4 | 30.4 | 32.6 | 31.8 | 29.4 | 24.0 | 18.2 | 14.1 |
| Average temperature (°C) | 9.4 | 11.4 | 12.7 | 15.7 | 20.5 | 24.4 | 26.6 | 26.4 | 23.5 | 18.4 | 12.2 | 8.5 |
| Average night temperature (°C) | 5.8 | 7.3 | 8.1 | 10.8 | 15.7 | 19.3 | 22.1 | 22.0 | 18.7 | 13.6 | 7.8 | 4.3 |
| Absolute minimum temperature (°C) | -2.7 | -3.4 | -4.4 | 6.0 | 7.9 | 16.0 | 19.7 | 18.3 | 14.1 | 4.0 | -1.8 | -2.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 5.5 | 6.5 | 8.2 | 9.0 | 10.7 | 12.0 | 11.1 | 10.0 | 10.5 | 8.5 | 7.2 | 7.1 |
| Precipitation (mm) | 141 | 162 | 142 | 166 | 107 | 71 | 107 | 150 | 13 | 15 | 58 | 107 |
| Sunny days | 11 | 13 | 18 | 16 | 13 | 17 | 6 | 12 | 17 | 24 | 20 | 21 |
| Rainy days | 20 | 15 | 13 | 14 | 18 | 13 | 25 | 19 | 13 | 7 | 10 | 10 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit City of Decatur during the most sunny months:
The largest precipitation sum in City of Decatur is at