Weather on April 21 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
April 21st in Glacier National Park (via Kalispell, MT) typically brings cool spring weather, with average highs around 59°F and lows near 33°F — a 26°F daily swing. Over 55 years of records, the warmest April 21st was in 2010 (64°F average), while the coldest was 2013 (30°F) — a 34°F range across recorded history. Precipitation has occurred on 36% of recorded April 21st dates, with snow falling 2% of the time. 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 April 21st in Glacier? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 51°F | 26°F | 0.1" | 0" |
| 2024 | 57°F | 23°F | 0" | -- |
| 2023 | 50°F | 29°F | 0.03" | 0" |
| 2022 | 53°F | 32°F | 0.84" | 0" |
| 2021 | 60°F | 20°F | 0" | 0" |
| 2020 | 69°F | 28°F | 0" | 0" |
| 2019 | 63°F | 34°F | 0" | 0" |
| 2018 | 58°F | 34°F | 0" | 0" |
| 2017 | 55°F | 35°F | 0.1" | 0" |
| 2016 | 79°F | 43°F | 0" | 0" |
| 2015 | 72°F | 32°F | 0" | 0" |
| 2014 | 67°F | 24°F | 0" | 0" |
| 2013 | 35°F | 25°F | 0.1" | 0.6" |
| 2012 | 60°F | 32°F | 0" | 0" |
| 2011 | 46°F | 34°F | 0.08" | 0" |
| 2010 | 80°F | 49°F | 0" | 0" |
| 2009 | 81°F | 35°F | 0" | 0" |
| 2008 | 43°F | 23°F | 0.05" | 0" |
| 2007 | 56°F | 24°F | 0" | 0" |
| 2006 | 71°F | 31°F | 0" | 0" |
| 2005 | 63°F | 33°F | 0" | 0" |
| 2004 | 55°F | 31°F | 0" | -- |
| 2003 | 72°F | 33°F | 0" | -- |
| 2002 | 55°F | 34°F | 0.2" | -- |
| 2001 | 51°F | 28°F | 0" | -- |
| 2000 | 68°F | 37°F | 0" | -- |
| 1999 | 49°F | 33°F | 0.74" | 0" |
| 1998 | 71°F | 28°F | 0" | 0" |
| 1997 | 54°F | 31°F | 0" | 0" |
| 1996 | 49°F | 31°F | 0.36" | 0" |
| 1995 | 54°F | 33°F | 0" | 0" |
| 1994 | 70°F | 44°F | 0.08" | 0" |
| 1993 | 61°F | 30°F | 0" | 0" |
| 1992 | 53°F | 35°F | 0.13" | 0" |
| 1991 | 70°F | 32°F | 0" | 0" |
| 1990 | 63°F | 46°F | 0.08" | 0" |
| 1989 | 68°F | 44°F | 0.13" | 0" |
| 1988 | 52°F | 43°F | 0.1" | 0" |
| 1987 | 70°F | 29°F | 0" | 0" |
| 1986 | 72°F | 46°F | 0" | 0" |
| 1985 | 44°F | 27°F | 0" | 0" |
| 1984 | 54°F | 43°F | 0" | 0" |
| 1983 | 68°F | 33°F | 0" | 0" |
| 1982 | 61°F | 20°F | 0" | 0" |
| 1981 | 53°F | 41°F | 0.13" | 0" |
| 1980 | 73°F | 40°F | 0" | -- |
| 1979 | 56°F | 26°F | 0" | -- |
| 1978 | 49°F | 34°F | 1.57" | 0" |
| 1977 | 52°F | 33°F | 0.03" | -- |
| 1976 | 50°F | 34°F | 0" | -- |
| 1975 | 57°F | 23°F | 0" | -- |
| 1974 | 55°F | 30°F | 0" | -- |
| 1973 | 61°F | 29°F | 0" | -- |
| 1972 | 51°F | 36°F | 0.05" | -- |
| 1971 | 54°F | 41°F | 0.38" | -- |