Average annual temperature is 19.1 °C
Absolute maximum temperature: 43.0 °C
Absolute minimum temperature: -4.5 °C
Number of sunny days: 208 days
Number of rainy days: 157 days
Look at detailed online map of Collinsville
* Weather data for Collinsville 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) | 23.1 | 25.6 | 26.7 | 29.9 | 32.8 | 38.0 | 39.3 | 43.0 | 41.0 | 32.4 | 27.1 | 23.4 |
| Average daytime temperature (°C) | 14.6 | 15.3 | 19.3 | 21.9 | 27.5 | 32.5 | 35.6 | 38.7 | 33.4 | 24.8 | 17.9 | 14.7 |
| Average temperature (°C) | 9.2 | 9.0 | 13.6 | 16.5 | 22.0 | 26.6 | 29.9 | 32.8 | 27.4 | 19.3 | 12.6 | 9.5 |
| Average night temperature (°C) | 5.0 | 4.6 | 9.2 | 11.9 | 17.5 | 21.9 | 25.1 | 26.8 | 22.4 | 15.2 | 8.3 | 5.5 |
| Absolute minimum temperature (°C) | -4.5 | -4.5 | -2.1 | 6.2 | 9.8 | 17.4 | 19.7 | 20.4 | 17.9 | -0.5 | -2.4 | -0.9 |
| 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) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.3 | 14.1 | 13.4 | 12.4 | 11.3 | 10.4 | 10.0 |
| 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) | 7.0 | 6.3 | 8.1 | 8.7 | 9.5 | 11.3 | 12.0 | 12.3 | 10.1 | 8.0 | 8.0 | 7.4 |
| Precipitation (mm) | 67 | 94 | 203 | 51 | 106 | 133 | 83 | 4 | 69 | 236 | 54 | 65 |
| Sunny days | 21 | 11 | 14 | 16 | 10 | 8 | 21 | 26 | 16 | 20 | 23 | 22 |
| Rainy days | 10 | 17 | 17 | 14 | 21 | 22 | 10 | 5 | 14 | 11 | 7 | 9 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Collinsville during the most sunny months:
The largest precipitation sum in Collinsville is at