Boise

The tables below display average monthly climate and weather indicators in Boise Idaho.

Temperature by: Fahrenheit / Centigrade

Boise Temperature Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Avg. Temperature29.035.942.449.157.566.574.072.562.651.839.930.150.9
Avg. Max Temperature36.444.252.961.471.080.990.288.177.064.648.737.762.8
Avg. Min Temperature21.627.531.936.743.952.157.756.848.239.031.122.539.1
Days with Max Temp of 90 F or Higher0.00.00.0< 0.51.05.019.016.03.0< 0.50.00.044.0
Days with Min Temp Below Freezing26.021.017.08.02.0< 0.50.00.00.06.018.025.0123
 
Boise Heating and Cooling Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Heating Degree Days111681570147724275.06.020.016041475310825861
Cooling Degree Days0.00.00.00.09.012028525288.00.00.00.0754
 
Boise Precipitation Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Precipitation (inches)1.51.11.31.21.10.80.40.40.80.81.51.412.1
Days with Precipitation 0.01 inch or More12.010.010.08.08.06.03.02.04.06.010.011.090.0
Monthly Snowfall (inches)6.53.71.60.60.1< 0.05< 0.05< 0.05< 0.050.12.35.920.8
 
Other Boise Weather Indicators Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Average Wind Speed8.08.99.99.99.49.08.48.28.28.38.48.18.7
Clear Days4.05.06.06.08.012.020.019.017.012.06.05.0120
Partly Cloudy Days5.06.07.09.010.010.07.08.07.08.06.06.090.0
Cloudy Days22.017.018.015.013.08.03.04.06.011.018.020.0155
Percent of Possible Sunshine40.051.062.068.070.075.087.085.082.069.043.038.064.0
Avg. Relative Humidity69.574.566.557.052.550.042.037.040.547.558.070.570.0

Weather information for other cities in Idaho

Portions of this site are based on the CIA World Fact Book, a public-domain work
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