Average annual temperature is 11.6 °C
Absolute maximum temperature: 33.6 °C
Absolute minimum temperature: -21.4 °C
Number of sunny days: 165 days
Number of rainy days: 192 days
Number of snow days: 8 days
Look at detailed online map of Rockland
* Weather data for Rockland 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) | 18.6 | 19.0 | 14.7 | 30.9 | 27.7 | 31.8 | 31.1 | 29.3 | 33.6 | 27.5 | 17.8 | 17.1 |
| Average daytime temperature (°C) | 7.2 | 6.6 | 9.0 | 16.9 | 20.3 | 24.2 | 28.2 | 25.7 | 23.1 | 18.4 | 9.9 | 8.5 |
| Average temperature (°C) | 3.4 | 1.8 | 3.9 | 11.0 | 14.3 | 18.4 | 23.3 | 21.0 | 18.5 | 13.6 | 5.0 | 4.2 |
| Average night temperature (°C) | 0.0 | -2.4 | -0.3 | 6.1 | 8.5 | 13.6 | 19.6 | 17.1 | 14.9 | 10.0 | 1.0 | 0.9 |
| Absolute minimum temperature (°C) | -4.7 | -21.4 | -4.5 | -1.9 | 2.7 | 7.0 | 14.7 | 12.6 | 7.1 | 4.0 | -4.8 | -6.7 |
| 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 | 9.2 |
| 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) | 4.5 | 6.6 | 7.6 | 8.7 | 12.1 | 10.6 | 11.2 | 9.6 | 7.6 | 7.9 | 7.1 | 5.3 |
| Precipitation (mm) | 174 | 50 | 112 | 104 | 83 | 113 | 193 | 207 | 256 | 77 | 52 | 219 |
| Sunny days | 8 | 16 | 14 | 16 | 19 | 6 | 9 | 10 | 14 | 16 | 18 | 19 |
| Rainy days | 20 | 10 | 14 | 14 | 12 | 24 | 22 | 21 | 16 | 15 | 12 | 12 |
| Snow days | 3 | 2 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Rockland during the most sunny months:
The largest precipitation sum in Rockland is at