Weather on September 12 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 12th 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 12th was in 2011 (69°F average), while the coldest was 2014 (42°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 27% of September 12th dates historically, with the wettest September 12th recording 2.9" 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 12th in Glacier? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 78°F | 48°F | 0.56" | 0" |
| 2024 | 59°F | 54°F | 1.52" | 0" |
| 2023 | 78°F | 52°F | 0" | 0" |
| 2022 | 80°F | 39°F | 0" | 0" |
| 2021 | 67°F | 42°F | 0" | 0" |
| 2020 | 84°F | 37°F | 0" | 0" |
| 2019 | 71°F | 40°F | 0" | 0" |
| 2018 | 62°F | 35°F | 0.13" | 0" |
| 2017 | 84°F | 36°F | 0" | 0" |
| 2016 | 59°F | 32°F | 0" | 0" |
| 2015 | 84°F | 42°F | 0" | 0" |
| 2014 | 61°F | 23°F | 0" | 0" |
| 2013 | 90°F | 48°F | 0" | 0" |
| 2012 | 64°F | 24°F | 0" | 0" |
| 2011 | 84°F | 53°F | 0" | 0" |
| 2010 | 71°F | 33°F | 0" | 0" |
| 2009 | 83°F | 40°F | 0" | 0" |
| 2008 | 78°F | 34°F | 0" | 0" |
| 2007 | 71°F | 39°F | 0" | 0" |
| 2006 | 82°F | 36°F | 0" | 0" |
| 2005 | 50°F | 42°F | 0.69" | 0" |
| 2004 | 59°F | 50°F | 0.03" | -- |
| 2003 | 63°F | 44°F | 0.08" | -- |
| 2002 | 81°F | 41°F | 0" | -- |
| 2001 | 79°F | 51°F | 0" | -- |
| 2000 | 76°F | 34°F | 0" | -- |
| 1999 | 70°F | 29°F | 0" | -- |
| 1998 | 81°F | 37°F | 0" | 0" |
| 1997 | 66°F | 44°F | 0.03" | 0" |
| 1996 | 81°F | 47°F | 0" | 0" |
| 1995 | 80°F | 39°F | 0" | 0" |
| 1994 | 70°F | 30°F | 0" | 0" |
| 1993 | 57°F | 33°F | 1.7" | 0" |
| 1992 | 63°F | 42°F | 0.3" | 0" |
| 1991 | 77°F | 36°F | 0" | 0" |
| 1990 | 81°F | 42°F | 0" | 0" |
| 1989 | 65°F | 31°F | 0" | 0" |
| 1988 | 68°F | 29°F | 0" | 0" |
| 1987 | 83°F | 40°F | 0" | 0" |
| 1986 | 56°F | 34°F | 0" | 0" |
| 1985 | 55°F | 44°F | 2.9" | 0" |
| 1984 | 57°F | 38°F | 0.13" | 0" |
| 1983 | 68°F | 35°F | 0" | 0" |
| 1982 | 59°F | 38°F | 0.1" | 0" |
| 1981 | 85°F | 45°F | 0" | 0" |
| 1980 | 76°F | 48°F | 0" | 0" |
| 1979 | 70°F | 43°F | 0" | 0" |
| 1978 | 58°F | 45°F | 1.14" | 0" |
| 1977 | 72°F | 38°F | 0" | 0" |
| 1976 | 63°F | 50°F | 0.1" | 0" |
| 1975 | 74°F | 37°F | 0" | 0" |
| 1974 | 60°F | 30°F | 0" | -- |
| 1973 | 82°F | 52°F | 0" | -- |
| 1972 | 68°F | 46°F | 0.43" | -- |
| 1971 | 78°F | 37°F | 0" | -- |