Average annual temperature is 9.4 °C
Absolute maximum temperature: 32.1 °C
Absolute minimum temperature: -31.2 °C
Number of sunny days: 106 days
Number of rainy days: 225 days
Number of snow days: 34 days
Look at detailed online map of Watertown
* Weather data for Watertown 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) | 8.9 | 15.8 | 12.9 | 27.7 | 27.2 | 30.5 | 32.1 | 28.4 | 29.2 | 27.9 | 15.4 | 12.6 |
| Average daytime temperature (°C) | 1.9 | 3.4 | 4.5 | 14.8 | 18.0 | 23.3 | 26.0 | 23.6 | 22.5 | 15.9 | 7.2 | 5.8 |
| Average temperature (°C) | -1.6 | -2.5 | 0.2 | 8.9 | 12.3 | 18.1 | 21.6 | 19.2 | 17.7 | 12.2 | 3.3 | 2.5 |
| Average night temperature (°C) | -4.8 | -7.5 | -3.5 | 4.1 | 7.1 | 13.8 | 17.6 | 15.8 | 13.8 | 9.3 | 0.0 | -0.3 |
| Absolute minimum temperature (°C) | -17.1 | -31.2 | -11.2 | -7.0 | 1.6 | 7.4 | 12.8 | 10.6 | 7.0 | -1.8 | -5.5 | -9.6 |
| 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) | 9.3 | 10.5 | 11.9 | 13.5 | 14.7 | 15.4 | 15.1 | 14.0 | 12.5 | 11.0 | 9.7 | 9.0 |
| Daylight minimum duration (h) | 8.0 | 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) | 2.6 | 5.1 | 5.7 | 8.7 | 11.8 | 10.9 | 11.6 | 10.2 | 9.7 | 5.3 | 4.8 | 2.8 |
| Precipitation (mm) | 143 | 101 | 88 | 100 | 80 | 140 | 132 | 168 | 65 | 138 | 96 | 158 |
| Sunny days | 5 | 4 | 9 | 12 | 17 | 8 | 8 | 3 | 18 | 8 | 7 | 7 |
| Rainy days | 16 | 13 | 15 | 18 | 14 | 22 | 23 | 28 | 12 | 23 | 20 | 21 |
| Snow days | 10 | 11 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 3 |
The best time to visit Watertown during the most sunny months:
Months with the longest average daylight duration in Watertown:
The largest precipitation sum in Watertown is at