Average annual temperature is 10.4 °C
Absolute maximum temperature: 32.8 °C
Absolute minimum temperature: -27.6 °C
Number of sunny days: 110 days
Number of rainy days: 229 days
Number of snow days: 26 days
Look at detailed online map of Town of Sullivan
* Weather data for Town of 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) | 10.6 | 17.0 | 16.0 | 29.1 | 30.8 | 32.2 | 32.8 | 28.5 | 31.1 | 29.3 | 16.1 | 11.7 |
| Average daytime temperature (°C) | 3.3 | 5.5 | 5.6 | 16.5 | 20.1 | 24.1 | 27.7 | 24.3 | 22.6 | 16.9 | 8.0 | 6.3 |
| Average temperature (°C) | 0.2 | -0.6 | 1.1 | 9.9 | 13.6 | 18.6 | 22.6 | 20.0 | 17.9 | 13.0 | 4.2 | 3.1 |
| Average night temperature (°C) | -2.6 | -5.4 | -2.9 | 4.6 | 8.0 | 14.2 | 18.6 | 16.6 | 14.1 | 9.9 | 1.2 | 0.9 |
| Absolute minimum temperature (°C) | -9.2 | -27.6 | -9.3 | -4.4 | 1.6 | 10.3 | 15.8 | 12.7 | 8.4 | 0.8 | -3.8 | -6.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.4 | 10.5 | 11.9 | 13.4 | 14.7 | 15.3 | 15.0 | 13.9 | 12.5 | 11.0 | 9.7 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 2.4 | 4.7 | 5.4 | 8.4 | 11.9 | 10.4 | 11.4 | 10.2 | 9.2 | 5.9 | 5.2 | 2.7 |
| Precipitation (mm) | 127 | 91 | 116 | 146 | 63 | 153 | 162 | 202 | 56 | 134 | 74 | 162 |
| Sunny days | 6 | 5 | 8 | 12 | 20 | 10 | 7 | 6 | 14 | 7 | 9 | 6 |
| Rainy days | 19 | 16 | 19 | 18 | 11 | 20 | 24 | 25 | 16 | 24 | 17 | 20 |
| Snow days | 6 | 7 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 5 |
The best time to visit Town of Sullivan during the most sunny months:
Months with the longest average daylight duration in Town of Sullivan:
The largest precipitation sum in Town of Sullivan is at