Average annual temperature is 16.6 °C
Absolute maximum temperature: 39.8 °C
Absolute minimum temperature: -8.0 °C
Number of sunny days: 226 days
Number of rainy days: 139 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) | 19.1 | 21.5 | 25.7 | 28.0 | 31.4 | 38.3 | 38.9 | 39.8 | 35.4 | 31.1 | 25.9 | 20.3 |
| Average daytime temperature (°C) | 10.6 | 12.5 | 15.2 | 21.2 | 26.2 | 31.4 | 33.8 | 34.2 | 30.1 | 21.8 | 16.1 | 11.9 |
| Average temperature (°C) | 5.2 | 6.1 | 9.7 | 15.1 | 20.6 | 25.7 | 28.1 | 28.4 | 24.4 | 17.1 | 10.8 | 7.2 |
| Average night temperature (°C) | 1.3 | 1.7 | 5.5 | 10.1 | 15.9 | 20.8 | 23.5 | 23.8 | 20.0 | 13.3 | 7.0 | 4.0 |
| Absolute minimum temperature (°C) | -8.0 | -6.1 | -4.7 | 4.5 | 7.0 | 16.2 | 19.0 | 18.4 | 16.6 | 0.3 | -1.9 | -1.4 |
| 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 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.2 | 9.7 |
| 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) | 6.1 | 6.9 | 7.3 | 9.7 | 10.2 | 12.3 | 11.6 | 11.9 | 10.4 | 7.9 | 7.7 | 5.9 |
| Precipitation (mm) | 51 | 87 | 93 | 59 | 103 | 67 | 82 | 36 | 84 | 107 | 35 | 68 |
| Sunny days | 21 | 16 | 16 | 19 | 14 | 16 | 20 | 24 | 19 | 19 | 23 | 19 |
| Rainy days | 10 | 12 | 15 | 11 | 17 | 14 | 11 | 7 | 11 | 12 | 7 | 12 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Jamestown during the most sunny months:
The largest precipitation sum in Jamestown is at