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Climate & Weather Averages in Boise, Idaho, USA

Currently: 33 °F. Clear. (Weather station: Boise Air Terminal, USA). See more current weather

Annual Weather Averages Near Boise

Averages are for Boise Air Terminal, which is 4 miles from Boise.

Based on weather reports collected during 1992–2021.

All Year Climate & Weather Averages in Boise

High Temp: 93 °F

Low Temp: 25 °F

Mean Temp: 53 °F

Precipitation: 0.99"

Humidity: 52%

Dew Point: 33 °F

Wind: 10 mph

Pressure: 30.02 "Hg

Visibility: 10 mi

January Climate & Weather Averages in Boise

High Temp: 39 °F

Low Temp: 26 °F

Mean Temp: 33 °F

Precipitation: 1.44"

Humidity: 76%

Dew Point: 26 °F

Wind: 9 mph

Pressure: 30.21 "Hg

Visibility: 8 mi

February Climate & Weather Averages in Boise

High Temp: 46 °F

Low Temp: 29 °F

Mean Temp: 37 °F

Precipitation: 1.07"

Humidity: 66%

Dew Point: 27 °F

Wind: 11 mph

Pressure: 30.11 "Hg

Visibility: 10 mi

March Climate & Weather Averages in Boise

High Temp: 56 °F

Low Temp: 35 °F

Mean Temp: 45 °F

Precipitation: 1.37"

Humidity: 55%

Dew Point: 29 °F

Wind: 12 mph

Pressure: 30.04 "Hg

Visibility: 10 mi

April Climate & Weather Averages in Boise

High Temp: 62 °F

Low Temp: 39 °F

Mean Temp: 51 °F

Precipitation: 1.22"

Humidity: 50%

Dew Point: 32 °F

Wind: 12 mph

Pressure: 29.97 "Hg

Visibility: 11 mi

May Climate & Weather Averages in Boise

High Temp: 72 °F

Low Temp: 47 °F

Mean Temp: 60 °F

Precipitation: 1.43"

Humidity: 46%

Dew Point: 38 °F

Wind: 11 mph

Pressure: 29.91 "Hg

Visibility: 11 mi

June Climate & Weather Averages in Boise

High Temp: 82 °F

Low Temp: 54 °F

Mean Temp: 68 °F

Precipitation: 0.82"

Humidity: 39%

Dew Point: 41 °F

Wind: 11 mph

Pressure: 29.88 "Hg

Visibility: 11 mi

July Climate & Weather Averages in Boise

High Temp: 93 °F

Low Temp: 62 °F

Mean Temp: 78 °F

Precipitation: 0.24"

Humidity: 30%

Dew Point: 43 °F

Wind: 9 mph

Pressure: 29.87 "Hg

Visibility: 11 mi

August Climate & Weather Averages in Boise

High Temp: 91 °F

Low Temp: 61 °F

Mean Temp: 76 °F

Precipitation: 0.21"

Humidity: 30%

Dew Point: 41 °F

Wind: 8 mph

Pressure: 29.88 "Hg

Visibility: 11 mi

September Climate & Weather Averages in Boise

High Temp: 80 °F

Low Temp: 52 °F

Mean Temp: 66 °F

Precipitation: 0.44"

Humidity: 36%

Dew Point: 37 °F

Wind: 8 mph

Pressure: 29.95 "Hg

Visibility: 11 mi

October Climate & Weather Averages in Boise

High Temp: 65 °F

Low Temp: 41 °F

Mean Temp: 53 °F

Precipitation: 0.86"

Humidity: 49%

Dew Point: 33 °F

Wind: 9 mph

Pressure: 30.05 "Hg

Visibility: 11 mi

November Climate & Weather Averages in Boise

High Temp: 49 °F

Low Temp: 32 °F

Mean Temp: 41 °F

Precipitation: 1.18"

Humidity: 66%

Dew Point: 29 °F

Wind: 9 mph

Pressure: 30.15 "Hg

Visibility: 10 mi

December Climate & Weather Averages in Boise

High Temp: 39 °F

Low Temp: 25 °F

Mean Temp: 32 °F

Precipitation: 1.59"

Humidity: 76%

Dew Point: 25 °F

Wind: 10 mph

Pressure: 30.20 "Hg

Visibility: 8 mi

Quick Climate Info

Hottest MonthJuly (78 °F avg)
Coldest MonthDecember (32 °F avg)
Wettest MonthDecember (1.59" avg)
Windiest MonthMarch (12 mph avg)
Annual precip.11.86" (per year)

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