Weather on September 20 at Lassen Volcanic
Lassen Volcanic National Park
Based on 55 years of data from Redding, CA
Elevation Note: Lassen Volcanic sits at 6,700 ft. Expect temperatures 23°F cooler than the data shown below, which comes from Redding, CA at a lower elevation.
Planning Your Visit
September 20th in Lassen Volcanic National Park (via Redding, CA) typically brings hot fall weather, with average highs around 91°F and lows near 58°F — a 33°F daily swing. Over 55 years of records, the warmest September 20th was in 2000 (87°F average), while the coldest was 1986 (59°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 7% of September 20th dates historically, with the wettest September 20th recording 1.07" of rain. 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 20th in Lassen Volcanic? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 88°F | 65°F | 0" | 0" |
| 2024 | 97°F | 61°F | 0" | 0" |
| 2023 | 90°F | 60°F | 0" | 0" |
| 2022 | 78°F | 60°F | 0" | 0" |
| 2021 | 93°F | 66°F | 0" | 0" |
| 2020 | 96°F | 65°F | 0" | 0" |
| 2019 | 85°F | 59°F | 0" | 0" |
| 2018 | 97°F | 61°F | 0" | 0" |
| 2017 | 79°F | 59°F | 0" | 0" |
| 2016 | 91°F | 64°F | 0" | 0" |
| 2015 | 98°F | 57°F | 0" | 0" |
| 2014 | 95°F | 61°F | 0" | 0" |
| 2013 | 84°F | 52°F | 0.25" | 0" |
| 2012 | 96°F | 53°F | 0" | -- |
| 2011 | 102°F | 57°F | 0" | -- |
| 2010 | 83°F | 55°F | 0" | -- |
| 2009 | 97°F | 67°F | 0" | -- |
| 2008 | 79°F | 51°F | 0" | -- |
| 2007 | 82°F | 55°F | 0" | -- |
| 2006 | 85°F | 60°F | 0" | -- |
| 2005 | 95°F | 52°F | 0" | -- |
| 2004 | 75°F | 49°F | 0" | -- |
| 2003 | 102°F | 61°F | 0" | -- |
| 2002 | 99°F | 57°F | 0" | -- |
| 2001 | 94°F | 59°F | 0" | -- |
| 2000 | 100°F | 73°F | 0" | -- |
| 1999 | 90°F | 59°F | 0" | -- |
| 1998 | 86°F | 62°F | 0" | -- |
| 1997 | 89°F | 59°F | 0" | -- |
| 1996 | 91°F | 56°F | 0" | -- |
| 1995 | 100°F | 61°F | 0" | 0" |
| 1994 | 105°F | 59°F | 0" | 0" |
| 1993 | 86°F | 52°F | 0" | 0" |
| 1992 | 101°F | 58°F | 0" | 0" |
| 1991 | 97°F | 60°F | 0" | 0" |
| 1990 | 97°F | 72°F | 0" | 0" |
| 1989 | 85°F | 53°F | 0" | 0" |
| 1988 | 82°F | 61°F | 0" | 0" |
| 1987 | 101°F | 50°F | 0" | 0" |
| 1986 | 73°F | 45°F | 0" | 0" |
| 1985 | 87°F | 48°F | 0" | 0" |
| 1984 | 94°F | 61°F | 1.07" | 0" |
| 1983 | 95°F | 66°F | 0" | 0" |
| 1982 | 81°F | 48°F | 0" | 0" |
| 1981 | 90°F | 50°F | 0" | 0" |
| 1980 | 80°F | 54°F | 0" | 0" |
| 1979 | 99°F | 49°F | 0" | 0" |
| 1978 | 84°F | 53°F | 0" | 0" |
| 1977 | 78°F | 53°F | 0.41" | 0" |
| 1976 | 86°F | 53°F | 0" | 0" |
| 1975 | 102°F | 65°F | 0" | 0" |
| 1974 | 104°F | 68°F | 0" | 0" |
| 1973 | 77°F | 59°F | 1.04" | 0" |
| 1972 | 87°F | 56°F | 0" | 0" |
| 1971 | 95°F | 58°F | 0" | 0" |