Average annual temperature is 15.7 °C
Absolute maximum temperature: 34.8 °C
Absolute minimum temperature: -6.5 °C
Number of sunny days: 165 days
Number of rainy days: 196 days
Number of snow days: 4 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) | 22.2 | 24.4 | 26.7 | 28.8 | 28.4 | 32.9 | 34.7 | 34.8 | 32.1 | 28.7 | 27.3 | 20.5 |
| Average daytime temperature (°C) | 12.6 | 15.8 | 16.7 | 20.9 | 24.2 | 27.5 | 31.3 | 29.9 | 28.0 | 22.1 | 16.8 | 12.9 |
| Average temperature (°C) | 7.7 | 10.3 | 10.4 | 14.8 | 18.3 | 21.6 | 25.3 | 24.2 | 21.5 | 16.0 | 10.5 | 7.0 |
| Average night temperature (°C) | 4.1 | 6.0 | 5.3 | 9.5 | 13.3 | 16.5 | 20.1 | 19.7 | 16.2 | 10.8 | 5.8 | 2.6 |
| Absolute minimum temperature (°C) | -6.5 | -5.8 | -6.1 | 2.6 | 7.2 | 9.5 | 15.5 | 14.8 | 10.8 | 3.8 | -5.1 | -4.4 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.0 | 5.9 | 8.2 | 9.1 | 10.5 | 11.0 | 11.9 | 10.3 | 11.0 | 8.9 | 7.5 | 6.7 |
| Precipitation (mm) | 160 | 130 | 128 | 133 | 90 | 76 | 85 | 144 | 22 | 34 | 61 | 99 |
| Sunny days | 11 | 11 | 15 | 13 | 14 | 9 | 7 | 13 | 17 | 17 | 22 | 16 |
| Rainy days | 18 | 16 | 15 | 17 | 17 | 21 | 24 | 18 | 13 | 14 | 8 | 15 |
| Snow days | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Watertown during the most sunny months:
The largest precipitation sum in Watertown is at