Average annual temperature is 11.1 °C
Absolute maximum temperature: 36.5 °C
Absolute minimum temperature: -25.0 °C
Number of sunny days: 194 days
Number of rainy days: 155 days
Number of snow days: 16 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) | 9.2 | 13.6 | 20.6 | 25.5 | 32.2 | 33.0 | 34.3 | 36.5 | 33.8 | 27.8 | 18.6 | 14.2 |
| Average daytime temperature (°C) | 2.2 | 4.8 | 7.7 | 16.2 | 23.4 | 28.5 | 28.7 | 28.3 | 24.8 | 16.7 | 9.2 | 6.3 |
| Average temperature (°C) | -1.8 | -0.8 | 2.4 | 9.6 | 16.6 | 21.9 | 23.2 | 22.7 | 19.6 | 12.2 | 4.5 | 2.7 |
| Average night temperature (°C) | -4.6 | -5.1 | -1.5 | 4.1 | 10.6 | 15.7 | 18.0 | 17.9 | 15.5 | 8.6 | 0.6 | 0.2 |
| Absolute minimum temperature (°C) | -25.0 | -22.5 | -12.0 | -1.7 | 1.2 | 7.7 | 13.9 | 10.7 | 8.9 | -2.2 | -12.0 | -8.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 13.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.5 | 10.6 | 11.9 | 13.4 | 14.6 | 15.2 | 14.9 | 13.8 | 12.5 | 11.1 | 9.8 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 3.8 | 7.4 | 6.9 | 9.2 | 11.3 | 12.5 | 12.1 | 11.2 | 8.7 | 7.4 | 7.0 | 4.2 |
| Precipitation (mm) | 75 | 83 | 84 | 85 | 48 | 23 | 102 | 51 | 139 | 93 | 33 | 67 |
| Sunny days | 13 | 16 | 14 | 15 | 21 | 19 | 14 | 16 | 13 | 15 | 21 | 17 |
| Rainy days | 9 | 9 | 16 | 15 | 10 | 11 | 17 | 15 | 17 | 16 | 8 | 12 |
| Snow days | 9 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
The best time to visit Watertown during the most sunny months:
The largest precipitation sum in Watertown is at