Average annual temperature is 9.1 °C
Absolute maximum temperature: 29.9 °C
Absolute minimum temperature: -28.0 °C
Number of sunny days: 166 days
Number of rainy days: 179 days
Number of snow days: 20 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) | 10.2 | 12.6 | 11.2 | 19.2 | 27.7 | 27.2 | 28.2 | 27.0 | 29.9 | 26.2 | 13.8 | 13.9 |
| Average daytime temperature (°C) | 3.6 | 1.9 | 5.3 | 10.9 | 17.8 | 19.2 | 24.6 | 22.8 | 21.7 | 16.5 | 7.0 | 5.1 |
| Average temperature (°C) | -0.1 | -3.0 | 1.4 | 6.9 | 12.6 | 15.1 | 21.1 | 19.2 | 17.5 | 12.7 | 3.2 | 1.6 |
| Average night temperature (°C) | -3.5 | -7.6 | -2.2 | 3.4 | 8.1 | 12.1 | 18.2 | 16.0 | 14.3 | 9.6 | -0.1 | -1.5 |
| Absolute minimum temperature (°C) | -13.1 | -28.0 | -7.8 | -3.9 | 2.5 | 6.8 | 14.1 | 12.0 | 8.5 | 0.9 | -6.1 | -10.4 |
| 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) | 9.3 | 10.5 | 11.9 | 13.5 | 14.8 | 15.4 | 15.1 | 14.0 | 12.5 | 11.0 | 9.7 | 8.9 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 4.3 | 6.6 | 7.1 | 8.2 | 11.6 | 7.8 | 9.1 | 9.5 | 8.7 | 6.7 | 6.9 | 4.6 |
| Precipitation (mm) | 186 | 39 | 75 | 124 | 102 | 194 | 124 | 174 | 105 | 213 | 54 | 150 |
| Sunny days | 10 | 14 | 10 | 16 | 21 | 6 | 6 | 10 | 19 | 14 | 22 | 18 |
| Rainy days | 17 | 6 | 15 | 14 | 10 | 24 | 25 | 21 | 11 | 17 | 7 | 12 |
| Snow days | 4 | 8 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The best time to visit Rockland during the most sunny months:
Months with the longest average daylight duration in Rockland:
The largest precipitation sum in Rockland is at