Average annual temperature is 12.1 °C
Absolute maximum temperature: 34.8 °C
Absolute minimum temperature: -18.0 °C
Number of sunny days: 163 days
Number of rainy days: 194 days
Number of snow days: 8 days
Look at detailed online map of Thornwood
* Weather data for Thornwood 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) | 17.9 | 17.9 | 14.8 | 30.8 | 28.2 | 33.8 | 32.4 | 30.8 | 34.8 | 27.6 | 18.8 | 15.5 |
| Average daytime temperature (°C) | 7.5 | 7.3 | 9.4 | 17.7 | 20.8 | 24.9 | 29.0 | 26.6 | 23.5 | 18.6 | 10.2 | 8.5 |
| Average temperature (°C) | 3.7 | 2.4 | 4.3 | 11.7 | 14.9 | 19.3 | 23.7 | 21.7 | 18.8 | 13.8 | 5.4 | 4.2 |
| Average night temperature (°C) | 0.5 | -1.6 | 0.1 | 7.1 | 9.3 | 14.9 | 19.6 | 17.4 | 15.0 | 9.8 | 1.5 | 0.9 |
| Absolute minimum temperature (°C) | -4.9 | -18.0 | -5.9 | -1.2 | 4.9 | 9.5 | 15.4 | 13.7 | 8.6 | 4.4 | -4.4 | -6.0 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.9 | 6.3 | 7.4 | 8.7 | 12.1 | 10.4 | 11.3 | 10.1 | 7.7 | 7.3 | 7.2 | 4.8 |
| Precipitation (mm) | 142 | 46 | 110 | 125 | 45 | 84 | 170 | 96 | 280 | 108 | 60 | 220 |
| Sunny days | 12 | 16 | 13 | 14 | 18 | 9 | 6 | 9 | 13 | 17 | 20 | 16 |
| Rainy days | 18 | 10 | 15 | 16 | 13 | 21 | 25 | 22 | 17 | 14 | 9 | 14 |
| Snow days | 1 | 2 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The best time to visit Thornwood during the most sunny months:
The largest precipitation sum in Thornwood is at