Average annual temperature is 8.0 °C
Absolute maximum temperature: 36.1 °C
Absolute minimum temperature: -22.6 °C
Number of sunny days: 217 days
Number of rainy days: 96 days
Number of snow days: 52 days
Look at detailed online map of Cornish
* Weather data for Cornish 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) | 3.0 | 3.1 | 7.9 | 22.3 | 26.0 | 28.6 | 36.1 | 33.9 | 28.4 | 22.6 | 15.8 | 8.0 |
| Average daytime temperature (°C) | -1.6 | -1.5 | 1.7 | 10.9 | 20.9 | 23.8 | 32.2 | 29.0 | 24.6 | 16.4 | 8.5 | 3.2 |
| Average temperature (°C) | -4.2 | -4.8 | -2.3 | 4.0 | 13.2 | 16.5 | 23.7 | 21.0 | 16.2 | 9.1 | 3.2 | -0.4 |
| Average night temperature (°C) | -7.4 | -7.6 | -6.0 | -1.4 | 5.9 | 9.2 | 15.8 | 14.3 | 9.5 | 3.9 | -0.4 | -3.5 |
| Absolute minimum temperature (°C) | -22.6 | -13.4 | -12.6 | -6.1 | -0.6 | 5.0 | 10.1 | 9.3 | 2.4 | -6.5 | -8.4 | -10.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 13.0 | 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 | 13.8 | 12.5 | 11.1 | 9.8 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.6 | 6.8 | 7.8 | 9.6 | 12.0 | 12.4 | 13.3 | 11.7 | 10.5 | 8.6 | 7.0 | 6.2 |
| Precipitation (mm) | 94 | 51 | 80 | 57 | 25 | 29 | 0 | 26 | 33 | 56 | 45 | 48 |
| Sunny days | 11 | 14 | 7 | 16 | 12 | 17 | 28 | 21 | 24 | 23 | 23 | 21 |
| Rainy days | 7 | 3 | 8 | 6 | 19 | 13 | 3 | 10 | 6 | 8 | 7 | 6 |
| Snow days | 13 | 11 | 16 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 |
The best time to visit Cornish during the most sunny months:
The largest precipitation sum in Cornish is at