What is the best way to use the Montana climate data?
Use the monthly high and low averages to compare county by season, then open the climate trends page for a month-by-month chart.
County count
56
Summer candidates
17
Winter candidates
0
Montana Climate Summary
Seasonal climate context for search and comparison
Montana includes 56 county records. The annual average high is 54.6℉ and the annual average low is 30.4℉ based on the monthly climate dataset.
July has the highest average high at 81.5℉, while January has the lowest average low at 11.7℉. This helps compare summer comfort and winter warmth without relying on a single daily weather snapshot.
Under the default summer filter, 17 county match the cooling criteria. Under the default winter filter, 0 county match the warm-winter criteria.
Cool-summer candidates include Deer Lodge County, Beaverhead County, Granite County.
Montana Monthly Temperature Charts
State / County Average high Average low
Jan
30.9℉
11.7℉
Feb
34.0℉
13.3℉
Mar
43.9℉
21.0℉
Apr
53.2℉
28.8℉
May
63.0℉
37.8℉
Jun
71.4℉
45.5℉
Jul
81.5℉
51.4℉
Aug
80.6℉
49.6℉
Sep
69.8℉
41.4℉
Oct
54.7℉
30.7℉
Nov
40.6℉
20.7℉
Dec
31.5℉
12.9℉
Summer candidates
Jun-Aug average high no higher than 78.8℉, scroll to view all 17
| County | Average high | Average low |
|---|---|---|
| Deer Lodge County | 70.7℉ | 42.3℉ |
| Beaverhead County | 71.2℉ | 43.0℉ |
| Granite County | 71.4℉ | 42.8℉ |
| Glacier County | 71.8℉ | 45.1℉ |
| Flathead County | 72.1℉ | 44.8℉ |
| Park County | 72.7℉ | 43.5℉ |
| Silver Bow County | 72.7℉ | 44.4℉ |
| Meagher County | 72.9℉ | 44.6℉ |
| Powell County | 72.9℉ | 43.7℉ |
| Madison County | 73.0℉ | 44.4℉ |
| Ravalli County | 73.2℉ | 43.5℉ |
| Lewis and Clark County | 73.8℉ | 45.5℉ |
| Gallatin County | 73.9℉ | 44.2℉ |
| Jefferson County | 73.9℉ | 45.9℉ |
| Lincoln County | 74.1℉ | 46.0℉ |
| Mineral County | 74.3℉ | 46.2℉ |
| Missoula County | 74.5℉ | 45.5℉ |
Winter candidates
Dec-Feb average low no lower than 41.0℉, scroll to view all 0
| County | Average high | Average low |
|---|---|---|
No matching counties | ||
Montana County Highlights
Rank counties by summer comfort, winter warmth, and seasonal stability
Coolest Summer
Deer Lodge County Average high 70.7℉ Beaverhead County Average high 71.2℉ Granite County Average high 71.4℉ Glacier County Average high 71.8℉ Flathead County Average high 72.1℉ Park County Average high 72.7℉ Silver Bow County Average high 72.7℉ Meagher County Average high 72.9℉ Powell County Average high 72.9℉ Madison County Average high 73.0℉Warmest Winter
Sanders County Average low 20.1℉ Mineral County Average low 19.9℉ Lake County Average low 19.8℉ Lincoln County Average low 18.7℉ Missoula County Average low 17.2℉ Flathead County Average low 16.9℉ Sweet Grass County Average low 16.5℉ Ravalli County Average low 16.3℉ Broadwater County Average low 15.6℉ Yellowstone County Average low 15.6℉Frequently Asked Questions
Short answers based on the same visible climate data.
What does the summer filter mean?
The default summer filter selects places where June, July, and August average highs are no higher than 78.8℉.
What does the winter filter mean?
The default winter filter selects places where December, January, and February average lows are no lower than 41.0℉.