Lewiston
The tables below display average monthly climate and weather indicators in Lewiston Idaho.
Temperature by: Fahrenheit / Centigrade
Lewiston Temperature |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
Avg. Temperature | 33.6 | 39.1 | 44.1 | 50.6 | 58.4 | 66.9 | 74.1 | 73.7 | 64.1 | 52.3 | 41.3 | 34.5 | 52.7 |
Avg. Max Temperature | 39.6 | 46.6 | 53.5 | 61.5 | 70.2 | 79.8 | 89.0 | 88.3 | 77.2 | 63.2 | 48.1 | 40.2 | 63.1 |
Avg. Min Temperature | 27.6 | 31.5 | 34.7 | 39.7 | 46.5 | 53.9 | 59.2 | 58.9 | 50.9 | 41.4 | 34.4 | 28.7 | 42.3 |
Days with Max Temp of 90 F or Higher | 0.0 | 0.0 | 0.0 | < 0.5 | 1.0 | 4.0 | 16.0 | 14.0 | 4.0 | 0.0 | 0.0 | 0.0 | 40.0 |
Days with Min Temp Below Freezing | 21.0 | 16.0 | 12.0 | 3.0 | < 0.5 | 0.0 | 0.0 | 0.0 | < 0.5 | 3.0 | 12.0 | 21.0 | 87.0 |
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Lewiston Heating and Cooling |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
Heating Degree Days | 973 | 725 | 648 | 436 | 210 | 64.0 | 6.0 | 16.0 | 141 | 394 | 711 | 946 | 5270 |
Cooling Degree Days | 0.0 | 0.0 | 0.0 | 0.0 | 6.0 | 121 | 288 | 285 | 114 | 0.0 | 0.0 | 0.0 | 814 |
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Lewiston Precipitation |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
Precipitation (inches) | 1.3 | 0.9 | 1.1 | 1.1 | 1.3 | 1.3 | 0.7 | 0.8 | 0.8 | 0.9 | 1.2 | 1.2 | 12.4 |
Days with Precipitation 0.01 inch or More | 12.0 | 9.0 | 11.0 | 10.0 | 10.0 | 9.0 | 5.0 | 4.0 | 5.0 | 8.0 | 11.0 | 11.0 | 104 |
Monthly Snowfall (inches) | 5.9 | 2.5 | 1.3 | 0.1 | < 0.05 | 0.0 | < 0.05 | 0.0 | 0.0 | 0.1 | 1.7 | 4.2 | 15.8 |
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Other Lewiston Weather Indicators |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
Average Wind Speed | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
Clear Days | 3.0 | 3.0 | 4.0 | 5.0 | 6.0 | 8.0 | 18.0 | 16.0 | 13.0 | 9.0 | 3.0 | 3.0 | 91.0 |
Partly Cloudy Days | 4.0 | 5.0 | 6.0 | 6.0 | 9.0 | 9.0 | 7.0 | 8.0 | 7.0 | 7.0 | 6.0 | 4.0 | 78.0 |
Cloudy Days | 24.0 | 21.0 | 21.0 | 19.0 | 16.0 | 13.0 | 6.0 | 7.0 | 9.0 | 15.0 | 22.0 | 24.0 | 196 |
Percent of Possible Sunshine | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
Avg. Relative Humidity | 60.0 | 74.5 | 68.5 | 61.5 | 58.5 | 56.5 | 48.0 | 41.5 | 46.0 | 55.5 | 65.5 | 74.5 | 73.5 |
Weather information for other cities in Idaho