Average annual temperature is 11.7 °C
Absolute maximum temperature: 34.9 °C
Absolute minimum temperature: -18.8 °C
Number of sunny days: 221 days
Number of rainy days: 125 days
Number of snow days: 19 days
Look at detailed online map of Cromwell
* Weather data for Cromwell 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) | 10.0 | 15.4 | 21.9 | 27.9 | 30.0 | 31.9 | 34.1 | 34.9 | 33.1 | 31.1 | 18.6 | 14.6 |
| Average daytime temperature (°C) | 2.0 | 5.8 | 8.7 | 17.5 | 24.6 | 28.8 | 28.5 | 28.3 | 26.7 | 18.2 | 11.0 | 6.9 |
| Average temperature (°C) | -2.4 | -0.8 | 2.5 | 10.6 | 18.2 | 22.9 | 23.3 | 23.4 | 20.8 | 13.1 | 5.5 | 2.5 |
| Average night temperature (°C) | -5.5 | -5.5 | -1.9 | 4.9 | 12.2 | 17.2 | 18.8 | 19.3 | 15.8 | 8.8 | 1.1 | -0.8 |
| Absolute minimum temperature (°C) | -17.5 | -18.8 | -12.6 | -5.3 | 2.9 | 9.2 | 12.7 | 13.1 | 10.9 | -4.9 | -9.3 | -5.7 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| 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) | 5.2 | 7.5 | 7.3 | 9.5 | 11.4 | 12.2 | 11.9 | 11.3 | 10.6 | 7.8 | 7.0 | 5.2 |
| Precipitation (mm) | 58 | 48 | 47 | 43 | 51 | 113 | 87 | 74 | 25 | 56 | 7 | 49 |
| Sunny days | 17 | 17 | 16 | 18 | 18 | 16 | 17 | 19 | 22 | 16 | 24 | 21 |
| Rainy days | 7 | 9 | 12 | 11 | 13 | 14 | 14 | 12 | 8 | 14 | 4 | 7 |
| Snow days | 7 | 2 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 3 |
The best time to visit Cromwell during the most sunny months:
The largest precipitation sum in Cromwell is at