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     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     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 1.2 0.7 0.8 0.8 0.9 1.1 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     Other Lewiston Weather Indicators Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual 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 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 • Boise Weather • Pocatello Weather