Weather on September 15 at Glacier
Glacier National Park
Based on 55 years of data from Kalispell, MT
Elevation Note: Glacier sits at 4,500 ft. Expect temperatures 16°F cooler than the data shown below, which comes from Kalispell, MT at a lower elevation.
Planning Your Visit
September 15th in Glacier National Park (via Kalispell, MT) typically brings pleasant fall weather, with average highs around 71°F and lows near 40°F — a 31°F daily swing. Over 55 years of records, the warmest September 15th was in 1981 (66°F average), while the coldest was 2006 (41°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 22% of September 15th dates historically, with the wettest September 15th recording 1.45" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for September 15th in Glacier? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 68°F | 53°F | 0" | 0" |
| 2024 | 66°F | 41°F | 0" | 0" |
| 2023 | 77°F | 39°F | 0" | 0" |
| 2022 | 77°F | 43°F | 0" | 0" |
| 2021 | 74°F | 52°F | 0" | 0" |
| 2020 | 79°F | 41°F | 0" | 0" |
| 2019 | 80°F | 39°F | 0" | 0" |
| 2018 | 70°F | 34°F | 0" | 0" |
| 2017 | 56°F | 46°F | 0" | 0" |
| 2016 | 74°F | 30°F | 0" | 0" |
| 2015 | 64°F | 37°F | 0.2" | 0" |
| 2014 | 77°F | 34°F | 0" | 0" |
| 2013 | 86°F | 44°F | 0" | 0" |
| 2012 | 78°F | 38°F | 0" | 0" |
| 2011 | 65°F | 42°F | 0" | 0" |
| 2010 | 74°F | 41°F | 0" | 0" |
| 2009 | 85°F | 44°F | 0" | 0" |
| 2008 | 80°F | 35°F | 0" | 0" |
| 2007 | 81°F | 33°F | 0" | 0" |
| 2006 | 47°F | 35°F | 0.1" | 0" |
| 2005 | 73°F | 40°F | 0" | 0" |
| 2004 | 50°F | 39°F | 0.25" | -- |
| 2003 | 69°F | 48°F | 0" | -- |
| 2002 | 83°F | 43°F | 0" | -- |
| 2001 | 81°F | 44°F | 0" | -- |
| 2000 | 84°F | 44°F | 0" | -- |
| 1999 | 80°F | 35°F | 0" | -- |
| 1998 | 89°F | 39°F | 0" | 0" |
| 1997 | 56°F | 48°F | 1.45" | 0" |
| 1996 | 55°F | 39°F | 0.46" | 0" |
| 1995 | 80°F | 38°F | 0" | 0" |
| 1994 | 74°F | 45°F | 0" | 0" |
| 1993 | 51°F | 41°F | 0.81" | 0" |
| 1992 | 49°F | 40°F | 0.41" | 0" |
| 1991 | 66°F | 34°F | 0" | 0" |
| 1990 | 80°F | 43°F | 0.03" | 0" |
| 1989 | 80°F | 36°F | 0" | 0" |
| 1988 | 83°F | 37°F | 0" | 0" |
| 1987 | 65°F | 40°F | 0" | 0" |
| 1986 | 64°F | 46°F | 0.23" | 0" |
| 1985 | 56°F | 44°F | 0.94" | 0" |
| 1984 | 65°F | 35°F | 0" | 0" |
| 1983 | 71°F | 34°F | 0" | 0" |
| 1982 | 64°F | 27°F | 0" | 0" |
| 1981 | 85°F | 47°F | 0" | 0" |
| 1980 | 65°F | 40°F | 0.03" | 0" |
| 1979 | 84°F | 37°F | 0" | 0" |
| 1978 | 61°F | 49°F | 0.03" | 0" |
| 1977 | 74°F | 49°F | 0" | 0" |
| 1976 | 83°F | 44°F | 0" | 0" |
| 1975 | 80°F | 41°F | 0" | 0" |
| 1974 | 74°F | 41°F | 0" | -- |
| 1973 | 59°F | 33°F | 0" | -- |
| 1972 | 76°F | 46°F | 0" | -- |
| 1971 | 63°F | 32°F | 0" | -- |