Average annual temperature is 11.9 °C
Absolute maximum temperature: 30.6 °C
Absolute minimum temperature: -21.2 °C
Number of sunny days: 170 days
Number of rainy days: 193 days
Number of snow days: 2 days
Look at detailed online map of Rocky Brook
* Weather data for Rocky Brook 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) | 14.7 | 18.3 | 12.8 | 25.6 | 25.1 | 24.3 | 30.6 | 28.9 | 29.7 | 24.5 | 17.3 | 15.8 |
| Average daytime temperature (°C) | 7.3 | 6.5 | 8.1 | 13.9 | 18.2 | 21.3 | 26.4 | 24.9 | 22.3 | 18.4 | 10.5 | 8.5 |
| Average temperature (°C) | 3.9 | 2.5 | 4.4 | 10.2 | 14.0 | 17.5 | 23.0 | 21.5 | 19.1 | 14.5 | 6.6 | 5.5 |
| Average night temperature (°C) | 0.9 | -1.4 | 0.9 | 6.8 | 10.1 | 14.3 | 20.1 | 18.4 | 16.5 | 11.5 | 3.0 | 2.5 |
| Absolute minimum temperature (°C) | -4.5 | -21.2 | -3.0 | 0.2 | 5.3 | 8.8 | 16.1 | 14.8 | 11.1 | 6.6 | -3.0 | -4.9 |
| 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 | 9.2 |
| 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) | 4.2 | 6.3 | 7.4 | 8.8 | 11.9 | 10.5 | 10.7 | 10.2 | 7.5 | 8.1 | 7.3 | 5.5 |
| Precipitation (mm) | 188 | 60 | 117 | 87 | 80 | 89 | 149 | 140 | 242 | 78 | 39 | 161 |
| Sunny days | 8 | 13 | 16 | 15 | 22 | 10 | 12 | 8 | 12 | 16 | 21 | 17 |
| Rainy days | 23 | 13 | 15 | 15 | 9 | 20 | 19 | 23 | 18 | 15 | 9 | 14 |
| Snow days | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Rocky Brook during the most sunny months:
The largest precipitation sum in Rocky Brook is at