Glacier National Park (Montana) in september: average Weather, Temperature and Climate
Weather in Glacier National Park (Montana) in september 2025
The weather in Glacier National Park (Montana) in september comes from statistical datas on the past years. You can view the weather statistics for the whole month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
very bad weather 0.9cm
Weather at 6am
38°F
Clear/Sunny
51% of time
20%
15%
8%
Weather at 12pm
65°F
Clear/Sunny
56% of time
27%
10%
4%
Weather at 6pm
67°F
Clear/Sunny
57% of time
21%
16%
4%
Weather at 3am
40°F
56%
20%
11%
8%
Evolution of daily average temperature and precipitation in Glacier National Park (Montana) in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Glacier National Park (Montana) in september.
The climate of Glacier National Park (Montana) in september is very bad
the weather in Glacier National Park (Montana) in september is quite dry (with 1.7in of precipitation over 3 days). Unfortunately, the weather conditions is worsening than the previous month since in august there is an average of 1.1in of rainfall over 2 days.
The climate quite enjoyable in that locality this month. The thermometer averaged maximum of 70°F. The minimum is 38°F. Thus, the mean temperature average on this month of september in Glacier National Park (Montana) is 54°F. Note that seasonal normals in contrast with those observed in Glacier National Park (Montana) in september with a maximum record of 92°F in 2011 and a minimum record of 14°F in 2012. You can expect to have about 9 days with temperatures down below 32°F, or 30% of time.
On average, in Glacier National Park (Montana), the days of september last 12:35. Sunrise is at 06:12 and sunset is at 18:47.
September: another location in the United States (USA)?
If you want to go to the United States (USA) in september, there are destinations with better weather than Glacier National Park (Montana):
In september, Grand Canyon, Hawaii (Honolulu), Las Vegas, Seattle, Denver and Minneapolis (Minnesota) have perfect weather.
Furthermore, California, Louisiana, Washington D. C., Atlanta, Boston and Chicago have good weather.
Finally, Miami (Florida), Cody (Wyoming), Crater Lake (Oregon) , Dauphin Island (Alabama), Helena (Montana) and Montana have a tolerable climate, but better than Glacier National Park (Montana).
Seasonal average climate and temperature of Glacier National Park (Montana) in september
Check below seasonal norms These statistics are generated from the weather statements of the last years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 54°F | ||||
| Highest temperature | 70°F | ||||
| Lowest temperature | 38°F | ||||
| Highest record temperature | 92°F (2011) | ||||
| Lowest record temperature | 14°F (2012) | ||||
| Number of days at +86°F | 2 day(s) (7%) | ||||
| Number of days at +65°F | 20 day(s) (67%) | ||||
| Number of days at -32°F | 9 day(s) (30%) | ||||
| Wind | |||||
| Wind speed | 10km/h | ||||
| Wind temperature | 36°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 1.7in | ||||
| Number of days with rainfall | 3 day(s) (9%) | ||||
| Record daily rainfall | 1.8in (2019) | ||||
| Snowfall | 0.9cm | ||||
| Other climate data | |||||
| Humidity | 84% | ||||
| Visibility | 9.33km | ||||
| Cloud cover | 23% | ||||
| UV index | 5 | ||||
| Daily sunshine hours | 12 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:12 | ||||
| Time of sunset | 18:47 | ||||
| Length of day | 12:35 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | very bad | ||||
How was the weather last september?
Here is the day by day recorded weather in Glacier National Park (Montana) in september 2024:
47°F to 85°F
49°F to 86°F
50°F to 70°F
43°F to 76°F
43°F to 81°F
47°F to 83°F
49°F to 83°F
49°F to 85°F
47°F to 77°F
40°F to 76°F
47°F to 70°F
50°F to 52°F
47°F to 52°F
36°F to 59°F
36°F to 63°F
38°F to 74°F
50°F to 65°F
50°F to 58°F
43°F to 59°F
43°F to 56°F
38°F to 56°F
40°F to 59°F
45°F to 59°F
47°F to 68°F
56°F to 74°F
47°F to 54°F
43°F to 63°F
43°F to 72°F
49°F to 59°F
31°F to 45°F
Map: other cities in the United States (USA) in september
Cities near Glacier National Park (Montana):
| Helena (Montana) in september | tolerable weather |
| Montana in september | tolerable weather |
| Yellowstone National Park in september | very bad weather |
| Cody (Wyoming) in september | tolerable weather |
| Boise (Idaho) in september | perfect weather |
| Grand Teton National Park (Wyoming) in september | very bad weather |
| Jackson Hole in september | very bad weather |
| Mount Rainier National Park (Washington) in september | tolerable weather |
| Seattle in september | perfect weather |
| Portland in september | good weather |
| Westport (Washington) in september | good weather |
| La Push (Washington) in september | good weather |
Click over cities on the map for information about the weather in september.
Glacier National Park (Montana)
perfect weather
good
tolerable
bad
very bad
Weather data for Glacier National Park (Montana) in september:
Weather data for Glacier National Park (Montana) for september are derived from an average of the weather forecast since 2009 in Glacier National Park (Montana). There is a margin of error and these forecasts are to be considered as general information only. The weather in Glacier National Park (Montana) can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Glacier National Park (Montana).