Average annual temperature is 10.5 °C
Absolute maximum temperature: 38.9 °C
Absolute minimum temperature: -12.9 °C
Number of sunny days: 196 days
Number of rainy days: 143 days
Number of snow days: 26 days
Look at detailed online map of Opal City
* Weather data for Opal City 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) | 12.3 | 13.4 | 14.9 | 29.5 | 31.5 | 33.1 | 35.5 | 38.9 | 32.4 | 27.6 | 18.2 | 16.0 |
| Average daytime temperature (°C) | 6.8 | 7.5 | 7.5 | 13.8 | 22.9 | 26.3 | 31.9 | 30.6 | 23.3 | 17.1 | 9.7 | 8.8 |
| Average temperature (°C) | 1.6 | 1.0 | 1.9 | 7.1 | 14.9 | 18.4 | 23.2 | 22.5 | 15.7 | 10.1 | 4.4 | 4.0 |
| Average night temperature (°C) | -1.7 | -2.8 | -2.3 | 1.8 | 7.9 | 11.1 | 14.0 | 15.2 | 9.4 | 4.7 | 0.8 | 1.0 |
| Absolute minimum temperature (°C) | -11.9 | -12.9 | -5.5 | -4.7 | 1.3 | 4.6 | 10.5 | 8.7 | 2.4 | -6.1 | -7.6 | -4.9 |
| 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 | 10.4 | 11.9 | 13.5 | 14.8 | 15.5 | 15.2 | 14.0 | 12.5 | 11.0 | 9.6 | 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) | 5.4 | 7.2 | 7.3 | 9.6 | 11.9 | 13.7 | 14.0 | 11.9 | 9.7 | 8.3 | 5.6 | 4.1 |
| Precipitation (mm) | 24 | 18 | 56 | 46 | 23 | 9 | 0 | 8 | 32 | 29 | 53 | 86 |
| Sunny days | 13 | 13 | 6 | 9 | 17 | 19 | 29 | 25 | 19 | 18 | 16 | 12 |
| Rainy days | 16 | 7 | 16 | 16 | 14 | 11 | 2 | 6 | 11 | 13 | 13 | 18 |
| Snow days | 2 | 8 | 9 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The best time to visit Opal City during the most sunny months:
Months with the longest average daylight duration in Opal City:
The largest precipitation sum in Opal City is at