Average annual temperature is 10.0 °C
Absolute maximum temperature: 35.5 °C
Absolute minimum temperature: -28.2 °C
Number of sunny days: 188 days
Number of rainy days: 152 days
Number of snow days: 25 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) | 7.9 | 10.4 | 19.2 | 25.4 | 30.6 | 32.4 | 33.1 | 35.5 | 33.6 | 28.3 | 17.9 | 12.7 |
| Average daytime temperature (°C) | 1.0 | 2.7 | 5.9 | 14.6 | 22.2 | 27.5 | 28.3 | 27.1 | 24.0 | 15.6 | 7.9 | 5.2 |
| Average temperature (°C) | -2.7 | -2.6 | 0.5 | 8.4 | 15.1 | 20.8 | 22.6 | 21.6 | 18.9 | 11.4 | 3.3 | 1.6 |
| Average night temperature (°C) | -5.4 | -6.9 | -4.1 | 3.1 | 9.0 | 14.6 | 17.3 | 16.9 | 15.0 | 7.8 | -0.3 | -1.0 |
| Absolute minimum temperature (°C) | -28.2 | -23.9 | -15.5 | -3.5 | -0.3 | 6.4 | 12.5 | 9.2 | 8.4 | -2.9 | -12.5 | -8.0 |
| 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 | 9.0 |
| 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) | 3.4 | 6.7 | 6.9 | 8.1 | 10.7 | 12.2 | 12.6 | 11.2 | 8.8 | 6.9 | 6.7 | 4.1 |
| Precipitation (mm) | 50 | 76 | 88 | 98 | 49 | 44 | 83 | 103 | 62 | 84 | 35 | 48 |
| Sunny days | 11 | 15 | 11 | 16 | 20 | 23 | 15 | 16 | 13 | 12 | 21 | 15 |
| Rainy days | 11 | 10 | 14 | 13 | 11 | 7 | 16 | 15 | 17 | 18 | 7 | 13 |
| Snow days | 9 | 3 | 6 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 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