Average annual temperature is 7.4 °C
Absolute maximum temperature: 35.1 °C
Absolute minimum temperature: -29.0 °C
Number of sunny days: 189 days
Number of rainy days: 118 days
Number of snow days: 58 days
Look at detailed online map of Lewiston (historical)
* Weather data for Lewiston (historical) 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) | 7.2 | 8.2 | 7.8 | 22.2 | 26.3 | 29.5 | 34.6 | 35.1 | 30.2 | 24.0 | 15.6 | 14.8 |
| Average daytime temperature (°C) | 1.0 | 2.5 | 2.2 | 8.8 | 20.3 | 21.1 | 29.4 | 28.3 | 22.4 | 13.3 | 8.8 | 6.3 |
| Average temperature (°C) | -4.2 | -3.6 | -4.0 | 2.7 | 13.4 | 15.1 | 21.7 | 20.7 | 15.2 | 6.8 | 3.1 | 1.4 |
| Average night temperature (°C) | -8.3 | -7.9 | -8.6 | -2.1 | 7.3 | 9.5 | 13.7 | 14.3 | 9.4 | 2.5 | -0.9 | -1.6 |
| Absolute minimum temperature (°C) | -26.6 | -29.0 | -15.1 | -11.5 | 1.2 | 2.6 | 7.1 | 10.8 | 3.6 | -16.3 | -8.8 | -8.9 |
| 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 | 8.0 |
| Daylight mean duration (h) | 9.1 | 10.3 | 11.9 | 13.6 | 15.0 | 15.8 | 15.4 | 14.1 | 12.6 | 10.9 | 9.4 | 8.7 |
| 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) | 5.2 | 6.2 | 7.8 | 9.6 | 11.7 | 11.4 | 13.6 | 11.1 | 10.1 | 7.1 | 6.6 | 5.6 |
| Precipitation (mm) | 32 | 19 | 49 | 46 | 63 | 89 | 6 | 61 | 70 | 45 | 12 | 11 |
| Sunny days | 17 | 16 | 12 | 15 | 7 | 7 | 22 | 18 | 17 | 15 | 21 | 22 |
| Rainy days | 3 | 3 | 1 | 4 | 24 | 23 | 9 | 13 | 13 | 13 | 8 | 4 |
| Snow days | 11 | 9 | 18 | 11 | 0 | 0 | 0 | 0 | 0 | 3 | 1 | 5 |
The best time to visit Lewiston (historical) during the most sunny months:
Months with the longest average daylight duration in Lewiston (historical):
The largest precipitation sum in Lewiston (historical) is at