Average annual temperature is 20.0 °C
Absolute maximum temperature: 39.8 °C
Absolute minimum temperature: -3.4 °C
Number of sunny days: 171 days
Number of rainy days: 194 days
Look at detailed online map of Simpson County
* Weather data for Simpson County 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) | 23.8 | 28.3 | 28.8 | 30.6 | 33.1 | 36.0 | 38.6 | 39.8 | 36.2 | 31.5 | 27.7 | 24.9 |
| Average daytime temperature (°C) | 17.4 | 20.1 | 22.6 | 24.1 | 29.7 | 32.9 | 34.5 | 37.2 | 32.8 | 26.7 | 19.8 | 16.5 |
| Average temperature (°C) | 12.4 | 14.2 | 16.2 | 18.0 | 22.8 | 26.1 | 27.9 | 30.3 | 26.1 | 20.4 | 14.1 | 10.9 |
| Average night temperature (°C) | 8.5 | 10.2 | 11.6 | 13.5 | 17.6 | 21.0 | 23.4 | 24.7 | 20.8 | 15.1 | 9.8 | 6.7 |
| Absolute minimum temperature (°C) | -1.4 | -1.1 | -3.4 | 8.8 | 10.6 | 18.5 | 20.5 | 20.0 | 16.8 | 6.6 | 1.7 | -0.5 |
| 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) | 10.3 | 11.1 | 12.0 | 13.0 | 13.8 | 14.2 | 14.0 | 13.3 | 12.4 | 11.4 | 10.5 | 10.1 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 6.4 | 7.3 | 8.7 | 8.7 | 11.0 | 11.4 | 11.4 | 11.7 | 11.0 | 8.9 | 6.7 | 7.8 |
| Precipitation (mm) | 192 | 202 | 102 | 204 | 64 | 114 | 116 | 33 | 53 | 18 | 63 | 116 |
| Sunny days | 13 | 10 | 14 | 11 | 11 | 4 | 10 | 19 | 16 | 24 | 17 | 22 |
| Rainy days | 18 | 18 | 17 | 19 | 20 | 26 | 21 | 12 | 14 | 7 | 13 | 9 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Simpson County during the most sunny months:
The largest precipitation sum in Simpson County is at