Average annual temperature is 10.9 °C
Absolute maximum temperature: 32.9 °C
Absolute minimum temperature: -24.2 °C
Number of sunny days: 143 days
Number of rainy days: 205 days
Number of snow days: 17 days
Look at detailed online map of Old Chatham
* Weather data for Old Chatham 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) | 11.0 | 15.3 | 16.1 | 29.4 | 30.3 | 32.9 | 32.1 | 28.5 | 32.7 | 28.5 | 18.0 | 15.4 |
| Average daytime temperature (°C) | 4.8 | 5.5 | 8.0 | 17.1 | 21.4 | 24.5 | 28.2 | 25.5 | 23.0 | 18.0 | 8.7 | 7.3 |
| Average temperature (°C) | 1.4 | 0.3 | 2.6 | 10.7 | 14.5 | 18.7 | 23.0 | 20.6 | 18.0 | 13.3 | 4.0 | 3.3 |
| Average night temperature (°C) | -1.6 | -4.2 | -1.8 | 5.4 | 8.3 | 13.9 | 19.1 | 16.7 | 14.2 | 9.4 | 0.4 | 0.6 |
| Absolute minimum temperature (°C) | -7.5 | -24.2 | -6.5 | -3.7 | 1.9 | 7.7 | 14.2 | 11.2 | 6.7 | 1.5 | -5.1 | -7.2 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 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 | 13.9 | 12.5 | 11.1 | 9.8 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 3.3 | 6.0 | 7.1 | 8.5 | 12.1 | 10.0 | 10.7 | 9.9 | 8.0 | 6.7 | 6.6 | 4.1 |
| Precipitation (mm) | 98 | 53 | 109 | 104 | 44 | 167 | 216 | 126 | 147 | 122 | 49 | 155 |
| Sunny days | 11 | 9 | 11 | 14 | 20 | 9 | 4 | 6 | 14 | 15 | 17 | 13 |
| Rainy days | 16 | 16 | 16 | 16 | 11 | 21 | 27 | 25 | 16 | 16 | 10 | 15 |
| Snow days | 4 | 3 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 3 |
The best time to visit Old Chatham during the most sunny months:
The largest precipitation sum in Old Chatham is at