Average annual temperature is 8.9 °C
Absolute maximum temperature: 36.7 °C
Absolute minimum temperature: -12.9 °C
Number of sunny days: 168 days
Number of rainy days: 147 days
Number of snow days: 50 days
Look at detailed online map of Lewis
* Weather data for Lewis 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) | 9.6 | 10.3 | 10.5 | 25.4 | 28.2 | 29.1 | 34.7 | 36.7 | 28.3 | 24.3 | 13.6 | 12.0 |
| Average daytime temperature (°C) | 3.7 | 4.5 | 4.9 | 11.1 | 20.8 | 21.8 | 30.1 | 27.8 | 21.6 | 15.5 | 8.2 | 6.2 |
| Average temperature (°C) | -0.1 | 0.0 | 0.3 | 4.9 | 13.7 | 15.6 | 22.0 | 20.8 | 14.4 | 9.3 | 3.5 | 2.1 |
| Average night temperature (°C) | -2.5 | -2.8 | -3.3 | -0.2 | 7.3 | 9.2 | 13.8 | 14.3 | 8.4 | 4.6 | 0.0 | -0.7 |
| Absolute minimum temperature (°C) | -12.9 | -10.2 | -12.8 | -11.1 | 1.5 | 1.6 | 9.1 | 8.3 | 1.8 | -5.4 | -7.1 | -7.3 |
| 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 | 8.0 |
| Daylight mean duration (h) | 9.2 | 10.4 | 11.9 | 13.5 | 14.9 | 15.6 | 15.3 | 14.1 | 12.5 | 10.9 | 9.5 | 8.8 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 5.0 | 6.2 | 7.4 | 9.2 | 12.3 | 12.7 | 14.0 | 11.3 | 9.2 | 8.1 | 6.1 | 5.2 |
| Precipitation (mm) | 19 | 27 | 80 | 72 | 69 | 56 | 0 | 94 | 45 | 50 | 47 | 48 |
| Sunny days | 12 | 10 | 4 | 9 | 13 | 11 | 28 | 20 | 15 | 16 | 16 | 14 |
| Rainy days | 11 | 4 | 11 | 14 | 18 | 19 | 3 | 11 | 15 | 12 | 14 | 15 |
| Snow days | 8 | 14 | 16 | 7 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 2 |
The best time to visit Lewis during the most sunny months:
Months with the longest average daylight duration in Lewis:
The largest precipitation sum in Lewis is at