Idaho Weather Records
Weather data and records for the U.S. state of Idaho based on data compiled by the NOAA.
All data displayed in U.S. customary units.
All data displayed in metric units.
Idaho Statewide Averages
Average temperatures over the entire territory of the state, from 1991–2020.
| Month |
High (°F°C) |
Low (°F°C) |
| January |
33.20.7 |
17.1-8.3 |
| February |
37.43.0 |
18.7-7.4 |
| March |
45.97.7 |
24.6-4.1 |
| April |
53.211.8 |
29.8-1.2 |
| May |
62.917.1 |
37.43.0 |
| June |
71.221.8 |
43.76.5 |
| July |
82.327.9 |
50.510.3 |
| August |
81.227.4 |
49.29.5 |
| September |
71.221.8 |
41.65.3 |
| October |
56.213.4 |
32.30.1 |
| November |
41.55.3 |
23.5-4.7 |
| December |
32.40.2 |
16.9-8.4 |
| Entire Year |
55.813.2 |
32.20.1 |
Idaho Cities
Yearly weather averages for various places in Idaho, from 1991–2020.
| Average (°F°C) |
Record (°F°C) |
Yearly (inchescm) |
| Boise |
64.418.0 |
41.75.4 |
111.043.9 |
-25.1-31.7 |
11.529.2 |
17.644.8 |
| Bonners Ferry |
58.114.5 |
36.72.6 |
108.042.2 |
-33.0-36.1 |
21.454.3 |
53.7136.3 |
| Burley |
61.816.6 |
36.62.6 |
107.141.7 |
-35.0-37.2 |
10.125.7 |
n/a |
| Coeur d'Alene |
58.414.6 |
39.34.1 |
109.042.8 |
-29.9-34.4 |
25.264.0 |
n/a |
| Emmett |
64.217.9 |
38.83.8 |
111.043.9 |
-27.0-32.8 |
13.333.7 |
6.917.6 |
| Hamer |
58.914.9 |
28.1-2.1 |
105.140.6 |
-47.9-44.4 |
8.722.0 |
23.258.9 |
| Idaho Falls |
58.014.5 |
31.3-0.4 |
102.038.9 |
-38.0-38.9 |
9.824.9 |
n/a |
| Jerome |
63.817.7 |
36.72.6 |
109.943.3 |
-25.1-31.7 |
10.426.3 |
n/a |
| Kellogg |
58.614.8 |
36.32.4 |
111.043.9 |
-36.0-37.8 |
33.885.8 |
52.2132.6 |
| Lewiston |
64.017.8 |
43.16.2 |
117.047.2 |
-22.0-30.0 |
12.832.6 |
12.331.3 |
| McCall |
55.312.9 |
28.2-2.1 |
104.040.0 |
-35.0-37.2 |
24.261.4 |
126.5321.2 |
| Moscow |
59.815.4 |
36.02.2 |
109.042.8 |
-42.0-41.1 |
27.770.4 |
50.3127.7 |
| Pierce |
56.813.8 |
30.7-0.7 |
108.042.2 |
-44.0-42.2 |
41.9106.5 |
112.2284.9 |
| Pocatello |
60.615.9 |
33.60.9 |
104.040.0 |
-33.0-36.1 |
11.830.0 |
38.196.9 |
| Preston |
60.515.8 |
33.60.9 |
109.943.3 |
-31.0-35.0 |
16.842.6 |
49.3125.3 |
| Rexburg |
56.813.8 |
32.00.0 |
102.038.9 |
-36.0-37.8 |
12.632.1 |
n/a |
| Salmon |
58.514.7 |
32.40.2 |
105.140.6 |
-34.1-36.7 |
9.323.5 |
23.459.5 |
| Sandpoint |
57.314.0 |
35.62.0 |
106.041.1 |
-36.9-38.3 |
33.384.6 |
55.3140.4 |
| St. Maries |
58.614.8 |
37.02.8 |
109.943.3 |
-29.0-33.9 |
32.081.4 |
57.0144.7 |
| Twin Falls |
62.016.7 |
37.83.2 |
107.141.7 |
-24.0-31.1 |
10.326.1 |
n/a |