Average annual temperature is 13.4 °C
Absolute maximum temperature: 36.2 °C
Absolute minimum temperature: -12.8 °C
Number of sunny days: 205 days
Number of rainy days: 153 days
Number of snow days: 7 days
Look at detailed online map of Sullivan
* Weather data for Sullivan 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) | 18.7 | 18.9 | 21.1 | 28.1 | 31.7 | 33.4 | 34.9 | 36.2 | 32.4 | 29.5 | 24.9 | 16.4 |
| Average daytime temperature (°C) | 6.5 | 10.0 | 11.4 | 19.4 | 25.0 | 29.2 | 29.5 | 28.5 | 26.3 | 19.2 | 12.8 | 8.8 |
| Average temperature (°C) | 2.2 | 3.7 | 5.5 | 12.2 | 18.6 | 23.0 | 24.5 | 23.5 | 20.8 | 14.3 | 7.2 | 4.6 |
| Average night temperature (°C) | -0.9 | -0.7 | 1.1 | 6.5 | 12.6 | 17.2 | 19.8 | 19.2 | 15.9 | 10.2 | 2.7 | 1.8 |
| Absolute minimum temperature (°C) | -12.1 | -12.8 | -8.8 | -1.4 | 3.9 | 10.8 | 15.8 | 12.5 | 10.9 | -2.1 | -8.6 | -7.5 |
| 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 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 12.0 | 13.3 | 14.4 | 14.9 | 14.7 | 13.7 | 12.5 | 11.2 | 10.0 | 9.4 |
| 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) | 4.2 | 7.5 | 6.6 | 9.7 | 11.2 | 12.5 | 12.6 | 10.4 | 10.3 | 7.2 | 7.8 | 5.0 |
| Precipitation (mm) | 69 | 82 | 117 | 75 | 32 | 51 | 86 | 90 | 41 | 86 | 18 | 88 |
| Sunny days | 15 | 17 | 14 | 19 | 19 | 21 | 13 | 14 | 19 | 18 | 21 | 15 |
| Rainy days | 10 | 11 | 16 | 11 | 12 | 9 | 18 | 17 | 11 | 13 | 9 | 16 |
| Snow days | 6 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Sullivan during the most sunny months:
The largest precipitation sum in Sullivan is at