Weather on March 21 at Grand Teton
Grand Teton National Park
Based on 56 years of data from Jackson, WY
Elevation Note: Grand Teton sits at 6,800 ft. Expect temperatures 24°F cooler than the data shown below, which comes from Jackson, WY at a lower elevation.
Planning Your Visit
March 21st in Grand Teton National Park (via Jackson, WY) typically brings chilly spring weather, with average highs around 45°F and lows near 20°F — a 25°F daily swing. Over 56 years of records, the warmest March 21st was in 1997 (49°F average), while the coldest was 2019 (17°F) — a 32°F range across recorded history. Precipitation has occurred on 21% of recorded March 21st dates, with snow falling 21% of the time (heaviest snowfall: 3"). The last decade has been 6.5°F cooler on this date compared to 20-30 years ago.
The last decade has been 6.5°F cooler on this date compared to 20-30 years ago.
Planning for March 21st in Grand Teton? Bring layers as temperatures can vary throughout the day. Check road conditions if traveling, as snow is possible.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2026 | 71°F | 23°F | 0" | 0" |
| 2025 | 33°F | 16°F | 0.08" | 0.1" |
| 2024 | 47°F | 18°F | 0" | 0" |
| 2023 | 35°F | 20°F | 0.28" | 1" |
| 2022 | 38°F | 12°F | 0" | 0" |
| 2021 | 40°F | 24°F | 0.08" | 0.7" |
| 2020 | 41°F | 25°F | 0.05" | 0.5" |
| 2019 | 32°F | 2°F | 0" | 0" |
| 2018 | 38°F | 27°F | 0.05" | 0.1" |
| 2017 | 51°F | 31°F | 0" | 0" |
| 2016 | 39°F | 10°F | 0" | 0" |
| 2015 | 59°F | 22°F | 0" | 0" |
| 2014 | 44°F | 13°F | 0" | 0" |
| 2013 | 39°F | 22°F | 0.81" | 0.2" |
| 2012 | 45°F | 24°F | 0.25" | -- |
| 2011 | 36°F | 19°F | 0" | -- |
| 2010 | 49°F | 12°F | 0" | 0" |
| 2009 | 58°F | 20°F | 0" | 0" |
| 2008 | 40°F | 28°F | 0" | 0" |
| 2007 | 53°F | 33°F | 0" | -- |
| 2006 | 40°F | 13°F | -- | -- |
| 2005 | 42°F | 30°F | -- | -- |
| 2004 | 63°F | 24°F | -- | -- |
| 2003 | 45°F | 25°F | 0" | -- |
| 2002 | 43°F | 24°F | 0" | 0" |
| 2001 | 52°F | 36°F | -- | -- |
| 2000 | 37°F | 4°F | -- | -- |
| 1999 | 50°F | 38°F | -- | -- |
| 1998 | 38°F | 10°F | 0" | 0" |
| 1997 | 59°F | 40°F | 0" | 0" |
| 1996 | 54°F | 30°F | 0" | 0" |
| 1995 | 51°F | 30°F | -- | -- |
| 1994 | 48°F | 29°F | 0" | 0" |
| 1993 | 45°F | 13°F | 0.08" | 0.2" |
| 1992 | 49°F | 23°F | 0" | 0" |
| 1991 | 43°F | 16°F | 0" | 0" |
| 1990 | 55°F | 22°F | 0" | 0" |
| 1989 | 45°F | 4°F | 0" | 0" |
| 1988 | 58°F | 30°F | 0" | 0" |
| 1987 | 40°F | 8°F | 0" | 0" |
| 1986 | 57°F | 16°F | -- | -- |
| 1985 | 44°F | 12°F | 0.38" | 2.5" |
| 1984 | 46°F | 21°F | 0.03" | 0.5" |
| 1983 | 37°F | 20°F | 0" | 0" |
| 1982 | 38°F | 16°F | -- | 0" |
| 1981 | 40°F | 29°F | 0" | 0" |
| 1980 | 41°F | 26°F | 0.15" | 0.5" |
| 1979 | 42°F | 15°F | 0" | 0" |
| 1978 | 52°F | 16°F | 0" | 0" |
| 1977 | 39°F | 10°F | 0" | 0.3" |
| 1976 | 50°F | 13°F | 0" | 0" |
| 1975 | 38°F | 22°F | 0" | 0" |
| 1974 | 36°F | 3°F | 0" | 0" |
| 1973 | 40°F | 20°F | 0.41" | 3" |
| 1972 | 58°F | 22°F | 0" | 0" |
| 1971 | 41°F | 27°F | 0" | 0" |