Average annual temperature is 10.7 °C
Absolute maximum temperature: 30.7 °C
Absolute minimum temperature: -15.4 °C
Number of sunny days: 123 days
Number of rainy days: 223 days
Number of snow days: 19 days
Look at detailed online map of Farnham
* Weather data for Farnham 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) | 13.7 | 16.2 | 13.6 | 24.5 | 24.4 | 28.2 | 30.7 | 29.3 | 29.6 | 27.7 | 15.4 | 14.9 |
| Average daytime temperature (°C) | 4.0 | 5.5 | 5.3 | 13.7 | 17.7 | 22.3 | 25.4 | 23.5 | 21.8 | 15.9 | 9.0 | 7.3 |
| Average temperature (°C) | 1.1 | 0.7 | 1.8 | 8.9 | 13.0 | 18.4 | 21.9 | 20.1 | 18.2 | 13.0 | 5.8 | 4.6 |
| Average night temperature (°C) | -1.0 | -2.8 | -1.0 | 5.2 | 8.7 | 14.9 | 18.9 | 17.4 | 15.1 | 10.7 | 3.1 | 2.5 |
| Absolute minimum temperature (°C) | -6.9 | -15.4 | -6.6 | -3.5 | 2.9 | 10.9 | 15.0 | 13.0 | 10.9 | 3.8 | -4.7 | -3.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.5 | 10.6 | 11.9 | 13.4 | 14.6 | 15.2 | 14.9 | 13.9 | 12.5 | 11.1 | 9.8 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 2.4 | 5.6 | 6.2 | 8.7 | 11.4 | 11.1 | 11.4 | 10.4 | 9.5 | 5.9 | 5.3 | 3.4 |
| Precipitation (mm) | 172 | 87 | 126 | 139 | 64 | 83 | 128 | 119 | 51 | 108 | 84 | 128 |
| Sunny days | 4 | 7 | 8 | 11 | 21 | 12 | 11 | 6 | 17 | 10 | 9 | 7 |
| Rainy days | 23 | 15 | 18 | 19 | 10 | 18 | 20 | 25 | 13 | 21 | 19 | 22 |
| Snow days | 4 | 6 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 |
The best time to visit Farnham during the most sunny months:
The largest precipitation sum in Farnham is at