Average annual temperature is 14.5 °C
Absolute maximum temperature: 41.3 °C
Absolute minimum temperature: -13.2 °C
Number of sunny days: 233 days
Number of rainy days: 127 days
Number of snow days: 5 days
Look at detailed online map of Kelso
* Weather data for Kelso 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) | 13.5 | 17.6 | 22.0 | 31.3 | 33.9 | 37.7 | 40.0 | 41.3 | 35.1 | 32.6 | 21.6 | 16.5 |
| Average daytime temperature (°C) | 6.5 | 9.7 | 12.1 | 22.2 | 26.8 | 31.3 | 33.7 | 33.9 | 29.9 | 21.1 | 13.1 | 8.8 |
| Average temperature (°C) | 1.0 | 2.6 | 5.8 | 14.0 | 20.1 | 24.8 | 27.1 | 27.4 | 23.4 | 15.2 | 7.5 | 4.1 |
| Average night temperature (°C) | -2.5 | -2.7 | 1.2 | 7.7 | 14.2 | 18.9 | 21.7 | 21.9 | 17.9 | 10.5 | 3.2 | 0.8 |
| Absolute minimum temperature (°C) | -12.6 | -13.2 | -8.5 | -1.8 | 5.5 | 12.6 | 16.8 | 15.4 | 13.2 | -4.4 | -7.6 | -4.6 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.8 | 10.8 | 12.0 | 13.2 | 14.3 | 14.8 | 14.6 | 13.6 | 12.4 | 11.2 | 10.1 | 9.5 |
| 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) | 6.4 | 8.5 | 8.2 | 10.5 | 10.1 | 11.8 | 11.6 | 11.9 | 10.3 | 7.9 | 7.1 | 5.3 |
| Precipitation (mm) | 37 | 69 | 35 | 63 | 37 | 59 | 56 | 89 | 45 | 61 | 33 | 65 |
| Sunny days | 21 | 21 | 15 | 23 | 16 | 16 | 16 | 21 | 23 | 18 | 24 | 19 |
| Rainy days | 9 | 6 | 15 | 7 | 15 | 14 | 15 | 10 | 7 | 13 | 5 | 11 |
| Snow days | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The best time to visit Kelso during the most sunny months:
The largest precipitation sum in Kelso is at