Montana Weather Records
Weather data and records for the U.S. state of Montana based on data compiled by the NOAA.
All data displayed in U.S. customary units.
All data displayed in metric units.
Montana Statewide Averages
Average temperatures over the entire territory of the state, from 1991–2020.
| Month |
High (°F°C) |
Low (°F°C) |
| January |
30.7-0.7 |
11.4-11.5 |
| February |
34.01.1 |
13.1-10.5 |
| March |
43.96.6 |
21.0-6.1 |
| April |
53.311.8 |
29.0-1.7 |
| May |
63.117.3 |
37.83.2 |
| June |
71.722.0 |
45.87.6 |
| July |
81.727.6 |
51.610.9 |
| August |
80.927.2 |
49.910.0 |
| September |
69.921.1 |
41.55.3 |
| October |
54.812.6 |
30.8-0.6 |
| November |
40.64.8 |
20.6-6.3 |
| December |
31.4-0.3 |
12.8-10.7 |
| Entire Year |
54.812.7 |
30.5-0.8 |
Montana Cities
Yearly weather averages for various places in Montana, from 1991–2020.
| Average (°F°C) |
Record (°F°C) |
Yearly (inchescm) |
| Anaconda |
57.214.0 |
29.7-1.3 |
102.038.9 |
-38.0-38.9 |
14.837.5 |
75.9192.9 |
| Billings |
59.515.3 |
37.12.8 |
111.944.4 |
-49.0-45.0 |
14.336.3 |
57.4145.7 |
| Bozeman |
57.514.2 |
32.20.1 |
105.140.6 |
-43.1-41.7 |
19.850.2 |
92.6235.3 |
| Butte |
54.212.3 |
26.3-3.2 |
100.037.8 |
-52.1-46.7 |
12.732.3 |
n/a |
| Conrad |
56.713.7 |
30.2-1.0 |
105.140.6 |
-45.9-43.3 |
12.030.6 |
47.2119.9 |
| Cut Bank |
54.212.3 |
29.9-1.2 |
107.141.7 |
-47.0-43.9 |
10.727.3 |
n/a |
| Dillon |
56.313.5 |
30.4-0.9 |
102.038.9 |
-40.0-40.0 |
9.423.9 |
n/a |
| Glasgow |
55.212.9 |
31.5-0.3 |
113.045.0 |
-59.1-50.6 |
13.434.1 |
39.9101.2 |
| Glendive |
59.015.0 |
33.70.9 |
117.047.2 |
-50.1-45.6 |
14.837.5 |
25.063.5 |
| Great Falls |
57.314.1 |
32.60.3 |
107.141.7 |
-49.0-45.0 |
14.837.5 |
66.3168.5 |
| Hamilton |
59.615.3 |
33.30.7 |
105.140.6 |
-38.9-39.4 |
13.233.4 |
n/a |
| Hardin |
63.517.5 |
33.70.9 |
111.944.4 |
-47.0-43.9 |
12.832.6 |
28.071.2 |
| Havre |
56.813.8 |
30.3-0.9 |
111.043.9 |
-56.9-49.4 |
11.729.7 |
41.6105.8 |
| Helena |
57.914.4 |
33.10.6 |
105.140.6 |
-42.0-41.1 |
11.328.6 |
37.194.1 |
| Kalispell |
55.513.1 |
31.6-0.2 |
105.140.6 |
-38.0-38.9 |
16.842.6 |
57.9147.0 |
| Livingston |
59.115.1 |
33.10.6 |
106.041.1 |
-45.0-42.8 |
14.436.5 |
n/a |
| Miles City |
59.115.1 |
34.51.4 |
111.043.9 |
-49.0-45.0 |
12.932.7 |
n/a |
| Missoula |
57.614.2 |
33.81.0 |
107.141.7 |
-33.0-36.1 |
14.135.9 |
42.8108.7 |
| Opheim |
50.510.3 |
25.2-3.8 |
105.140.6 |
-49.0-45.0 |
11.930.3 |
36.492.5 |
| Red Lodge |
55.112.8 |
31.0-0.6 |
100.938.3 |
-42.0-41.1 |
23.259.0 |
143.6364.8 |
| West Glacier |
54.112.3 |
32.80.5 |
100.037.8 |
-36.0-37.8 |
30.377.0 |
118.1300.0 |
| West Yellowstone |
53.211.8 |
22.4-5.3 |
97.036.1 |
-65.9-54.4 |
24.161.2 |
n/a |