Average annual temperature is 17.2 °C
Absolute maximum temperature: 40.6 °C
Absolute minimum temperature: -8.0 °C
Number of sunny days: 224 days
Number of rainy days: 141 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) | 20.8 | 23.0 | 26.3 | 28.9 | 32.2 | 38.6 | 39.9 | 40.6 | 36.5 | 31.1 | 28.1 | 21.5 |
| Average daytime temperature (°C) | 12.7 | 14.4 | 17.1 | 21.5 | 26.8 | 32.1 | 34.6 | 35.3 | 30.9 | 22.9 | 17.6 | 13.1 |
| Average temperature (°C) | 6.8 | 7.4 | 10.9 | 15.3 | 20.9 | 25.7 | 28.3 | 29.0 | 24.9 | 17.6 | 11.4 | 7.9 |
| Average night temperature (°C) | 2.6 | 3.0 | 6.4 | 10.3 | 16.1 | 20.5 | 23.5 | 23.9 | 20.2 | 13.4 | 7.1 | 4.3 |
| Absolute minimum temperature (°C) | -8.0 | -6.3 | -5.2 | 4.8 | 7.0 | 16.4 | 19.1 | 17.1 | 16.0 | -0.3 | -2.2 | -2.6 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 6.6 | 6.5 | 7.5 | 9.5 | 9.7 | 11.7 | 11.6 | 11.8 | 10.5 | 8.1 | 8.1 | 6.9 |
| Precipitation (mm) | 79 | 130 | 128 | 95 | 75 | 53 | 95 | 65 | 75 | 137 | 70 | 63 |
| Sunny days | 22 | 14 | 18 | 18 | 16 | 13 | 18 | 23 | 19 | 17 | 22 | 24 |
| Rainy days | 9 | 14 | 13 | 12 | 15 | 17 | 13 | 8 | 11 | 14 | 8 | 7 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Cromwell during the most sunny months:
The largest precipitation sum in Cromwell is at