Average annual temperature is 13.0 °C
Absolute maximum temperature: 33.6 °C
Absolute minimum temperature: -9.1 °C
Number of sunny days: 167 days
Number of rainy days: 192 days
Number of snow days: 6 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) | 16.4 | 22.8 | 24.5 | 28.6 | 28.6 | 32.7 | 33.0 | 31.7 | 33.6 | 28.2 | 20.8 | 17.5 |
| Average daytime temperature (°C) | 8.8 | 12.7 | 12.4 | 19.3 | 22.3 | 26.5 | 29.6 | 27.9 | 25.6 | 19.5 | 12.7 | 9.6 |
| Average temperature (°C) | 4.0 | 5.6 | 5.9 | 12.3 | 15.9 | 20.2 | 23.8 | 22.3 | 19.7 | 14.0 | 6.8 | 5.0 |
| Average night temperature (°C) | 0.7 | 0.7 | 1.1 | 6.3 | 10.2 | 14.5 | 19.1 | 17.6 | 15.0 | 9.9 | 2.5 | 1.8 |
| Absolute minimum temperature (°C) | -6.6 | -9.1 | -7.6 | -0.2 | 2.5 | 9.2 | 15.1 | 11.7 | 9.3 | 2.7 | -6.8 | -4.7 |
| 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 | 13.2 | 14.3 | 14.9 | 14.6 | 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) | 3.8 | 7.0 | 7.4 | 8.9 | 9.9 | 11.1 | 11.4 | 10.9 | 9.4 | 7.5 | 7.1 | 5.0 |
| Precipitation (mm) | 113 | 54 | 108 | 75 | 89 | 111 | 92 | 97 | 37 | 79 | 52 | 81 |
| Sunny days | 10 | 16 | 16 | 14 | 17 | 12 | 6 | 13 | 14 | 15 | 21 | 13 |
| Rainy days | 19 | 11 | 14 | 16 | 14 | 18 | 25 | 18 | 16 | 16 | 8 | 17 |
| Snow days | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The best time to visit Watertown during the most sunny months:
The largest precipitation sum in Watertown is at