Average annual temperature is 18.0 °C
Absolute maximum temperature: 38.3 °C
Absolute minimum temperature: -4.0 °C
Number of sunny days: 184 days
Number of rainy days: 181 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) | 22.2 | 27.3 | 27.2 | 30.0 | 32.3 | 35.9 | 36.7 | 38.3 | 32.4 | 31.3 | 26.8 | 21.7 |
| Average daytime temperature (°C) | 14.6 | 17.3 | 19.0 | 21.9 | 27.8 | 32.0 | 32.7 | 32.7 | 30.3 | 24.9 | 17.9 | 14.3 |
| Average temperature (°C) | 9.8 | 11.3 | 13.2 | 15.9 | 21.5 | 25.4 | 27.1 | 27.1 | 24.2 | 19.1 | 12.3 | 8.9 |
| Average night temperature (°C) | 6.0 | 7.3 | 8.6 | 11.1 | 16.1 | 20.1 | 22.8 | 22.8 | 19.1 | 14.2 | 7.9 | 4.8 |
| Absolute minimum temperature (°C) | -2.6 | -3.4 | -4.0 | 5.4 | 7.8 | 16.6 | 19.4 | 17.8 | 15.2 | 2.8 | -0.2 | -2.0 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 5.7 | 6.3 | 7.8 | 7.8 | 11.1 | 12.3 | 10.9 | 10.6 | 10.8 | 8.4 | 6.8 | 7.1 |
| Precipitation (mm) | 149 | 121 | 147 | 183 | 52 | 103 | 106 | 118 | 50 | 23 | 53 | 66 |
| Sunny days | 14 | 9 | 15 | 12 | 11 | 11 | 11 | 16 | 17 | 24 | 23 | 21 |
| Rainy days | 17 | 19 | 16 | 18 | 20 | 19 | 20 | 15 | 13 | 7 | 7 | 10 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Cornish during the most sunny months:
The largest precipitation sum in Cornish is at