Average Temperatures for Idaho in October





Average temperatures for October at 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 temperatures based on weather data collected from 1991 to 2020 by the US National Centers for Environmental Information.

Eastern Idaho

Average October temperatures
High °F Low °F Place High °C Low °C
58 29 Driggs 15 -2
59 31 Idaho Falls 15 -1
51 24 Island Park 11 -4
63 32 Malad City 17 0
63 38 Pocatello 17 4
63 33 Preston 17 1
58 32 Saint Anthony 14 0

Central Idaho

Average daily temperatures in October
High °F Low °F Place High °C Low °C
54 27 Craters of the Moon Monument 12 -3
56 28 Ketchum 13 -2
64 34 Lake Walcott, Minidoka Dam 18 1
61 31 Middle Fork Lodge 16 -1
58 31 Salmon 15 -1
59 36 St. Maries 15 2
56 19 Stanley, Sawtooth Recreation Area 13 -7
63 36 Twin Falls 17 2

Southwestern Idaho

October temperatures: daily averages
High °F Low °F Place High °C Low °C
65 42 Boise 18 5
66 45 Brownlee Reservoir Dam 19 7
70 40 Bruneau 21 4
62 28 Idaho City 16 -3
66 39 Lake Lowell, Deer Flat Dam 19 4
57 28 McCall 14 -2
67 37 Mountain Home 20 3

Northern Idaho

Average October temperatures
High °F Low °F Place High °C Low °C
56 36 Bonners Ferry 14 2
58 39 Coeur d’Alene 15 4
58 28 Elk City 15 -2
58 33 Kellogg 14 0
63 42 Lewiston 17 6
61 33 Moscow 16 0
55 34 Mullan 13 1
58 33 Porthill 15 1
54 30 Powell 12 -1
64 36 Riggins 18 2
56 34 Sandpoint 14 1
55 36 Wallace 13 2
Reference

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

Idaho Temperatures
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