Weather on April 21 at Yellowstone
Yellowstone National Park
Based on 55 years of data from Jackson, WY
Elevation Note: Yellowstone sits at 7,350 ft. Expect temperatures 26°F cooler than the data shown below, which comes from Jackson, WY at a lower elevation.
Planning Your Visit
April 21st in Yellowstone National Park (via Jackson, WY) typically brings cool spring weather, with average highs around 54°F and lows near 26°F — a 28°F daily swing. Over 55 years of records, the warmest April 21st was in 1989 (52°F average), while the coldest was 2008 (25°F) — a 27°F range across recorded history. Precipitation has occurred on 29% of recorded April 21st dates, with snow falling 4% 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 Yellowstone? Bring layers as temperatures can vary throughout the day.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 53°F | 37°F | -- | 0" |
| 2024 | 52°F | 19°F | 0" | 0" |
| 2023 | 36°F | 24°F | 0.15" | 0.6" |
| 2022 | 47°F | 25°F | 0.05" | 0" |
| 2021 | 42°F | 10°F | 0" | 0" |
| 2020 | 56°F | 20°F | 0" | 0" |
| 2019 | 63°F | 36°F | 0.03" | 0" |
| 2018 | 61°F | 23°F | 0" | 0" |
| 2017 | 50°F | 33°F | 0.41" | 0" |
| 2016 | 63°F | 25°F | 0" | 0" |
| 2015 | 56°F | 23°F | 0" | 0" |
| 2014 | 60°F | 22°F | 0" | 0" |
| 2013 | 43°F | 33°F | 0.76" | -- |
| 2012 | 65°F | 38°F | 0" | -- |
| 2011 | 40°F | 28°F | 0" | 0" |
| 2010 | 65°F | 35°F | 0.25" | -- |
| 2009 | 64°F | 23°F | 0" | 0" |
| 2008 | 36°F | 14°F | 0.03" | 0" |
| 2007 | 53°F | 28°F | -- | -- |
| 2006 | 61°F | 24°F | -- | -- |
| 2005 | 50°F | 31°F | 0" | -- |
| 2004 | 45°F | 31°F | 0.08" | -- |
| 2003 | 57°F | 27°F | 0" | -- |
| 2002 | 46°F | 26°F | 0" | 0" |
| 2001 | 49°F | 30°F | -- | -- |
| 2000 | 66°F | 23°F | -- | -- |
| 1999 | 47°F | 29°F | 0.05" | 1" |
| 1998 | 59°F | 18°F | 0" | 0" |
| 1997 | 50°F | 33°F | -- | 0" |
| 1996 | 39°F | 23°F | -- | 0" |
| 1995 | 53°F | 24°F | 0" | 0" |
| 1994 | 78°F | 23°F | 0" | -- |
| 1993 | 53°F | 20°F | 0.25" | -- |
| 1992 | 58°F | 25°F | 0" | 0" |
| 1991 | 59°F | 36°F | 0" | 0" |
| 1990 | 70°F | 29°F | 0.13" | 0" |
| 1989 | 74°F | 30°F | 0" | 0" |
| 1988 | 52°F | 34°F | 1.02" | 0" |
| 1987 | 63°F | 13°F | 0" | 0" |
| 1986 | 69°F | 31°F | 0" | -- |
| 1985 | 37°F | 24°F | 0.05" | 0" |
| 1984 | 44°F | 20°F | 0.28" | 0" |
| 1983 | 59°F | 26°F | 0" | 0" |
| 1982 | 50°F | 10°F | 0" | 0" |
| 1981 | 48°F | 30°F | 1.09" | 0" |
| 1980 | 74°F | 24°F | 0" | 0" |
| 1979 | 55°F | 25°F | 0" | 0" |
| 1978 | 57°F | 29°F | 0" | 0" |
| 1977 | 63°F | 13°F | 0" | 0" |
| 1976 | 50°F | 36°F | 0" | 0" |
| 1975 | 48°F | 17°F | 0" | 0" |
| 1974 | 45°F | 15°F | 0" | 0" |
| 1973 | 47°F | 26°F | 0" | 0" |
| 1972 | 43°F | 31°F | 0" | 0" |
| 1971 | 48°F | 24°F | 0.66" | 0" |