Average Annual Temperatures in Idaho





Average annual temperatures for cities, towns, parks and lakes throughout Idaho are listed below in degrees Fahrenheit and Celsius.

You can jump to a separate table for each region of the state: Eastern, Central, Southwestern and Northern Idaho.

The tables give the normals for maximum and minimum yearly temperatures based on weather data collected from 1981 to 2010.

Eastern Idaho

Average annual temperatures
High °F Low °F Place High °C Low °C
53 27 Driggs 12 -3
57 31 Idaho Falls 14 0
54 24 Island Park 12 -4
60 32 Malad City 16 0
61 36 Pocatello 16 2
59 33 Preston 15 0
56 28 Saint Anthony 13 -2

Central Idaho

Average temperatures for the year
High °F Low °F Place High °C Low °C
55 31 Craters of the Moon Monument 13 -1
55 24 Grouse 13 -4
55 26 Ketchum 13 -3
61 33 Lake Walcott, Minidoka Dam 16 1
59 29 Middle Fork Lodge 15 -2
57 31 Salmon 14 0
52 18 Stanley, Sawtooth Recreation Area 11 -8
60 35 Twin Falls 16 2

Southwestern Idaho

Average yearly temperatures
High °F Low °F Place High °C Low °C
64 41 Boise 18 5
65 45 Brownlee Reservoir Dam 18 7
68 41 Bruneau 20 5
60 28 Idaho City 15 -2
65 41 Lake Lowell, Deer Flat Dam 18 5
54 27 McCall 12 -3
65 38 Mountain Home 18 3

Northern Idaho

Annual average temperature
High °F Low °F Place High °C Low °C
58 39 Coeur d’Alene 14 4
57 27 Elk City 14 -3
58 36 Kellogg 14 2
64 43 Lewiston 18 6
60 36 Moscow 15 2
58 35 Porthill 14 2
55 30 Powell 13 -1
66 41 Riggins 19 5
57 35 Sandpoint 14 2
56 36 Wallace 13 2
Reference

National Climatic Data Center. NOAA's 1981-2010 Climate Normals.

Idaho Temperatures
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