Average annual temperature is 11.8 °C
Absolute maximum temperature: 30.0 °C
Absolute minimum temperature: -13.8 °C
Number of sunny days: 134 days
Number of rainy days: 220 days
Number of snow days: 11 days
Look at detailed online map of Opal
* Weather data for Opal 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) | 18.3 | 20.5 | 21.3 | 26.7 | 25.2 | 27.3 | 30.0 | 28.3 | 28.6 | 25.6 | 21.2 | 15.6 |
| Average daytime temperature (°C) | 8.1 | 11.3 | 11.1 | 18.4 | 19.9 | 23.0 | 26.5 | 25.1 | 22.4 | 17.5 | 11.7 | 8.8 |
| Average temperature (°C) | 3.4 | 5.6 | 5.5 | 11.9 | 14.5 | 17.8 | 21.5 | 20.4 | 17.4 | 12.6 | 6.0 | 4.2 |
| Average night temperature (°C) | 0.0 | 0.9 | 0.9 | 6.4 | 9.9 | 12.9 | 17.2 | 16.7 | 13.5 | 8.6 | 1.6 | 0.8 |
| Absolute minimum temperature (°C) | -13.8 | -11.8 | -10.7 | -3.0 | 1.1 | 7.4 | 12.2 | 11.1 | 8.4 | 0.2 | -8.5 | -6.1 |
| 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 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.8 | 10.8 | 12.0 | 13.2 | 14.3 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 9.5 |
| 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) | 3.6 | 6.6 | 6.8 | 8.9 | 9.5 | 10.4 | 11.5 | 10.1 | 9.3 | 7.3 | 7.1 | 4.9 |
| Precipitation (mm) | 118 | 98 | 89 | 75 | 106 | 67 | 154 | 174 | 73 | 69 | 70 | 105 |
| Sunny days | 6 | 11 | 11 | 16 | 12 | 8 | 8 | 6 | 12 | 14 | 18 | 12 |
| Rainy days | 22 | 16 | 18 | 13 | 19 | 22 | 23 | 25 | 18 | 17 | 10 | 17 |
| Snow days | 3 | 1 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 |
The best time to visit Opal during the most sunny months:
The largest precipitation sum in Opal is at