Average annual temperature is 11.8 °C
Absolute maximum temperature: 36.6 °C
Absolute minimum temperature: -20.2 °C
Number of sunny days: 204 days
Number of rainy days: 141 days
Number of snow days: 20 days
Look at detailed online map of Jamestown
* Weather data for Jamestown 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) | 13.8 | 12.8 | 22.4 | 27.8 | 31.4 | 32.5 | 34.1 | 36.6 | 34.1 | 31.1 | 18.0 | 14.5 |
| Average daytime temperature (°C) | 2.1 | 5.2 | 8.4 | 17.6 | 24.8 | 28.8 | 28.6 | 28.5 | 26.6 | 18.1 | 10.6 | 6.8 |
| Average temperature (°C) | -2.1 | -0.9 | 2.9 | 10.5 | 18.2 | 22.8 | 23.4 | 23.5 | 20.7 | 13.4 | 5.4 | 2.7 |
| Average night temperature (°C) | -5.0 | -5.5 | -1.4 | 4.9 | 11.9 | 17.2 | 18.3 | 18.9 | 15.8 | 9.3 | 1.1 | -0.3 |
| Absolute minimum temperature (°C) | -16.9 | -20.2 | -12.6 | -3.4 | 3.5 | 9.3 | 12.9 | 12.5 | 10.7 | -3.6 | -12.2 | -7.1 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.2 |
| 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) | 4.5 | 7.3 | 7.3 | 9.5 | 11.9 | 12.2 | 12.5 | 11.2 | 10.1 | 7.4 | 7.2 | 4.6 |
| Precipitation (mm) | 45 | 81 | 63 | 40 | 78 | 47 | 114 | 84 | 63 | 90 | 18 | 61 |
| Sunny days | 15 | 17 | 13 | 17 | 19 | 20 | 14 | 19 | 14 | 17 | 23 | 16 |
| Rainy days | 6 | 8 | 17 | 12 | 12 | 10 | 17 | 12 | 16 | 13 | 5 | 13 |
| Snow days | 10 | 3 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 2 |
The best time to visit Jamestown during the most sunny months:
The largest precipitation sum in Jamestown is at