Weather on August 18 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
August 18th in Glacier National Park (via Kalispell, MT) typically brings warm summer weather, with average highs around 82°F and lows near 47°F — a 35°F daily swing. Over 55 years of records, the warmest August 18th was in 2024 (77°F average), while the coldest was 1987 (52°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 18% of August 18th dates historically, with the wettest August 18th recording 1.88" of rain. The last decade has been 4.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.7°F warmer on this date compared to 20-30 years ago.
Planning for August 18th in Glacier? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 85°F | 45°F | 0" | 0" |
| 2024 | 91°F | 62°F | 0" | 0" |
| 2023 | 90°F | 53°F | 0" | 0" |
| 2022 | 95°F | 54°F | 0" | 0" |
| 2021 | 67°F | 49°F | 0.03" | 0" |
| 2020 | 90°F | 53°F | 0.03" | 0" |
| 2019 | 82°F | 41°F | 0" | 0" |
| 2018 | 86°F | 46°F | 0" | 0" |
| 2017 | 90°F | 43°F | 0" | 0" |
| 2016 | 76°F | 49°F | 0.05" | 0" |
| 2015 | 78°F | 40°F | 0" | 0" |
| 2014 | 85°F | 51°F | 0" | 0" |
| 2013 | 87°F | 48°F | 0" | 0" |
| 2012 | 92°F | 45°F | 0" | 0" |
| 2011 | 81°F | 38°F | 0" | 0" |
| 2010 | 88°F | 46°F | 0" | 0" |
| 2009 | 81°F | 51°F | 0" | 0" |
| 2008 | 99°F | 53°F | 0" | 0" |
| 2007 | 86°F | 42°F | 0" | 0" |
| 2006 | 79°F | 42°F | 0" | 0" |
| 2005 | 68°F | 45°F | 0.03" | 0" |
| 2004 | 76°F | 53°F | 0.03" | -- |
| 2003 | 88°F | 47°F | 0" | -- |
| 2002 | 77°F | 46°F | 0" | -- |
| 2001 | 91°F | 52°F | 0" | -- |
| 2000 | 85°F | 43°F | 0" | -- |
| 1999 | 91°F | 48°F | 0" | -- |
| 1998 | 74°F | 33°F | 0" | 0" |
| 1997 | 75°F | 44°F | 0.48" | 0" |
| 1996 | 74°F | 42°F | 0" | 0" |
| 1995 | 66°F | 41°F | 0" | 0" |
| 1994 | 82°F | 45°F | 0" | 0" |
| 1993 | 75°F | 53°F | 0" | 0" |
| 1992 | 92°F | 54°F | 0" | 0" |
| 1991 | 88°F | 52°F | 0" | 0" |
| 1990 | 76°F | 50°F | 0" | 0" |
| 1989 | 78°F | 42°F | 0" | 0" |
| 1988 | 80°F | 47°F | 0" | 0" |
| 1987 | 68°F | 36°F | 0" | 0" |
| 1986 | 91°F | 49°F | 0" | 0" |
| 1985 | 82°F | 40°F | 0" | 0" |
| 1984 | 85°F | 57°F | 0.46" | 0" |
| 1983 | 86°F | 42°F | 0" | 0" |
| 1982 | 85°F | 44°F | 0" | 0" |
| 1981 | 86°F | 52°F | 0" | 0" |
| 1980 | 65°F | 49°F | 1.88" | 0" |
| 1979 | 86°F | 59°F | 0" | 0" |
| 1978 | 71°F | 48°F | 0.05" | 0" |
| 1977 | 93°F | 55°F | 0" | 0" |
| 1976 | 73°F | 43°F | 0" | 0" |
| 1975 | 66°F | 45°F | 0.76" | 0" |
| 1974 | 87°F | 44°F | 0" | -- |
| 1973 | 77°F | 42°F | 0" | -- |
| 1972 | 84°F | 47°F | 0" | -- |
| 1971 | 86°F | 48°F | 0" | -- |