Weather on September 21 at Crater Lake
Crater Lake National Park
Based on 55 years of data from Medford, OR
Elevation Note: Crater Lake sits at 7,100 ft. Expect temperatures 25°F cooler than the data shown below, which comes from Medford, OR at a lower elevation.
Planning Your Visit
September 21st in Crater Lake National Park (via Medford, OR) typically brings warm fall weather, with average highs around 80°F and lows near 45°F — a 35°F daily swing. Over 55 years of records, the warmest September 21st was in 2014 (77°F average), while the coldest was 1993 (47°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 11% of September 21st dates historically. 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 21st in Crater Lake? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 82°F | 57°F | 0" | 0" |
| 2024 | 85°F | 43°F | 0" | 0" |
| 2023 | 74°F | 43°F | 0" | 0" |
| 2022 | 74°F | 57°F | 0.05" | 0" |
| 2021 | 91°F | 49°F | 0" | 0" |
| 2020 | 81°F | 49°F | 0" | 0" |
| 2019 | 78°F | 48°F | 0" | 0" |
| 2018 | 88°F | 46°F | 0" | 0" |
| 2017 | 59°F | 44°F | 0" | 0" |
| 2016 | 71°F | 47°F | 0" | 0" |
| 2015 | 87°F | 54°F | 0" | 0" |
| 2014 | 94°F | 61°F | 0" | 0" |
| 2013 | 64°F | 53°F | 0.41" | 0" |
| 2012 | 83°F | 54°F | 0" | 0" |
| 2011 | 93°F | 50°F | 0" | 0" |
| 2010 | 66°F | 49°F | 0" | 0" |
| 2009 | 97°F | 46°F | 0" | 0" |
| 2008 | 72°F | 54°F | 0.03" | 0" |
| 2007 | 86°F | 45°F | 0" | 0" |
| 2006 | 67°F | 53°F | 0.05" | 0" |
| 2005 | 84°F | 49°F | 0" | -- |
| 2004 | 76°F | 39°F | 0" | -- |
| 2003 | 89°F | 48°F | 0" | -- |
| 2002 | 93°F | 48°F | 0" | -- |
| 2001 | 82°F | 39°F | 0" | 0" |
| 2000 | 86°F | 50°F | 0" | 0" |
| 1999 | 86°F | 46°F | 0" | 0" |
| 1998 | 72°F | 39°F | 0" | 0" |
| 1997 | 89°F | 43°F | 0" | 0" |
| 1996 | 71°F | 46°F | 0" | 0" |
| 1995 | 85°F | 47°F | 0" | 0" |
| 1994 | 88°F | 44°F | 0" | 0" |
| 1993 | 66°F | 29°F | 0" | 0" |
| 1992 | 85°F | 45°F | 0" | 0" |
| 1991 | 79°F | 32°F | 0" | 0" |
| 1990 | 98°F | 44°F | 0" | 0" |
| 1989 | 77°F | 40°F | 0" | 0" |
| 1988 | 64°F | 36°F | 0" | 0" |
| 1987 | 81°F | 37°F | 0" | 0" |
| 1986 | 64°F | 38°F | 0" | 0" |
| 1985 | 80°F | 45°F | 0" | 0" |
| 1984 | 72°F | 38°F | 0.03" | 0" |
| 1983 | 80°F | 35°F | 0" | 0" |
| 1982 | 73°F | 40°F | 0" | 0" |
| 1981 | 70°F | 40°F | 0" | 0" |
| 1980 | 69°F | 42°F | 0" | 0" |
| 1979 | 88°F | 45°F | 0" | 0" |
| 1978 | 69°F | 49°F | 0" | 0" |
| 1977 | 68°F | 49°F | 0" | 0" |
| 1976 | 81°F | 48°F | 0" | 0" |
| 1975 | 91°F | 42°F | 0" | 0" |
| 1974 | 96°F | 43°F | 0" | 0" |
| 1973 | 75°F | 39°F | 0" | 0" |
| 1972 | 72°F | 39°F | 0.08" | 0" |
| 1971 | 83°F | 41°F | 0" | 0" |