Average annual temperature is 22.9 °C
Absolute maximum temperature: 36.8 °C
Absolute minimum temperature: 0.3 °C
Number of sunny days: 135 days
Number of rainy days: 230 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) | 28.8 | 32.7 | 34.1 | 32.8 | 33.1 | 34.9 | 36.6 | 36.8 | 35.0 | 31.3 | 30.0 | 27.8 |
| Average daytime temperature (°C) | 23.2 | 27.8 | 28.5 | 28.8 | 29.5 | 31.9 | 33.1 | 33.9 | 31.2 | 28.0 | 24.8 | 21.4 |
| Average temperature (°C) | 17.0 | 20.6 | 21.5 | 23.0 | 23.8 | 26.1 | 27.8 | 28.5 | 26.1 | 23.2 | 19.9 | 17.2 |
| Average night temperature (°C) | 12.2 | 14.8 | 16.0 | 18.7 | 19.4 | 22.2 | 24.3 | 24.7 | 22.5 | 19.4 | 16.3 | 14.0 |
| Absolute minimum temperature (°C) | 0.3 | 6.7 | 8.1 | 12.9 | 15.3 | 19.8 | 22.7 | 23.4 | 18.7 | 11.4 | 6.8 | 6.6 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.6 | 11.2 | 12.0 | 12.9 | 13.6 | 13.9 | 13.8 | 13.1 | 12.3 | 11.5 | 10.7 | 10.4 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 8.5 | 9.2 | 10.0 | 9.6 | 11.5 | 11.1 | 11.1 | 11.2 | 10.1 | 8.9 | 7.2 | 6.9 |
| Precipitation (mm) | 47 | 27 | 42 | 174 | 160 | 272 | 177 | 133 | 242 | 109 | 162 | 107 |
| Sunny days | 22 | 21 | 15 | 6 | 13 | 0 | 1 | 2 | 8 | 17 | 15 | 15 |
| Rainy days | 9 | 7 | 16 | 24 | 18 | 30 | 30 | 29 | 22 | 14 | 15 | 16 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Jamestown is at