Average annual temperature is 15.4 °C
Absolute maximum temperature: 41.1 °C
Absolute minimum temperature: -8.9 °C
Number of sunny days: 267 days
Number of rainy days: 93 days
Number of snow days: 5 days
Look at detailed online map of Hecla
* Weather data for Hecla 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) | 16.3 | 15.7 | 17.0 | 30.5 | 28.8 | 33.8 | 41.1 | 35.9 | 34.0 | 30.0 | 25.7 | 20.2 |
| Average daytime temperature (°C) | 8.1 | 10.7 | 11.6 | 21.8 | 24.9 | 28.8 | 36.2 | 31.6 | 28.3 | 24.1 | 17.5 | 14.2 |
| Average temperature (°C) | 3.2 | 4.1 | 6.3 | 14.7 | 18.7 | 22.5 | 29.6 | 25.4 | 22.2 | 17.7 | 11.6 | 8.0 |
| Average night temperature (°C) | -0.8 | -0.5 | 1.8 | 8.2 | 12.7 | 15.9 | 22.8 | 19.6 | 16.9 | 12.1 | 6.8 | 3.6 |
| Absolute minimum temperature (°C) | -7.5 | -8.9 | -6.9 | -2.5 | 6.4 | 10.7 | 19.1 | 17.0 | 12.4 | 1.8 | -0.8 | -1.0 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 7.4 | 9.1 | 8.6 | 12.0 | 12.5 | 13.0 | 12.7 | 11.6 | 10.5 | 10.3 | 8.9 | 8.2 |
| Precipitation (mm) | 91 | 49 | 121 | 1 | 15 | 1 | 11 | 51 | 10 | 1 | 11 | 14 |
| Sunny days | 17 | 15 | 17 | 28 | 23 | 28 | 22 | 13 | 22 | 30 | 27 | 25 |
| Rainy days | 10 | 12 | 14 | 2 | 8 | 2 | 9 | 18 | 8 | 1 | 3 | 6 |
| Snow days | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Hecla is at