Idaho August Weather

Idaho weather averages in the month of August from 1991–2020 based on data made available by the NOAA.
Statewide August Averages
High temperature 81.3 °F
Low temperature 49.2 °F
Precipitation 0.7 inches
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Idaho August Temperature by Year
Idaho Cities
August weather averages for various places in Idaho, from 1991–2020.
City Average (°F) Record (°F) Monthly (inches)
High Low High Low Precipitation
Boise 90.7 60.6 110 34 0.2
Bonners Ferry 84.8 51.4 105 28 0.6
Burley 86.8 53.2 105 31 0.4
Coeur d'Alene 83.9 56.5 109 32 0.7
Emmett 90.3 56.6 109 31 0.2
Hamer 86.9 46.7 105 20 0.5
Idaho Falls 85.7 47.8 100 28 0.6
Jerome 90.4 55.3 107 32 0.3
Kellogg 83.5 50.8 111 28 0.7
Ketchum 79.4 42.6 96 16 0.4
Lewiston 89.7 60.0 115 41 0.5
McCall 82.2 43.3 104 20 0.5
Moscow 85.7 47.9 109 30 0.7
Pierce 82.4 43.1 108 25 1.1
Pocatello 88.1 50.5 104 30 0.5
Preston 87.2 52.1 100 30 0.8
Rexburg 84.0 48.6 99 27 0.7
Salmon 85.2 49.1 102 29 0.6
Sandpoint 82.1 49.4 100 28 0.8
St. Maries 83.6 51.1 110 29 0.9
Twin Falls 87.1 56.0 106 32 0.5