Weather on September 18 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 18th in Lassen Volcanic National Park (via Redding, CA) typically brings warm fall weather, with average highs around 88°F and lows near 58°F — a 30°F daily swing. Over 55 years of records, the warmest September 18th was in 2000 (91°F average), while the coldest was 1986 (55°F) — a 36°F range across recorded history. Rain or other precipitation has occurred on about 15% of September 18th dates historically, with the wettest September 18th recording 2.03" of rain. The last decade has been 3.2°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.2°F cooler on this date compared to 20-30 years ago.
Planning for September 18th in Lassen Volcanic? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 100°F | 63°F | 0" | 0" |
| 2024 | 86°F | 60°F | 0" | 0" |
| 2023 | 88°F | 63°F | 0" | 0" |
| 2022 | 71°F | 57°F | 1.73" | 0" |
| 2021 | 72°F | 60°F | 0.05" | 0" |
| 2020 | 83°F | 66°F | 0" | 0" |
| 2019 | 71°F | 54°F | 0.28" | 0" |
| 2018 | 87°F | 49°F | 0" | 0" |
| 2017 | 81°F | 63°F | 0" | 0" |
| 2016 | 99°F | 60°F | 0" | 0" |
| 2015 | 92°F | 60°F | 0" | 0" |
| 2014 | 84°F | 65°F | 0" | 0" |
| 2013 | 88°F | 63°F | 0" | 0" |
| 2012 | 94°F | 57°F | 0" | -- |
| 2011 | 98°F | 55°F | 0" | -- |
| 2010 | 82°F | 63°F | 0" | -- |
| 2009 | 98°F | 67°F | 0" | -- |
| 2008 | 85°F | 49°F | 0" | -- |
| 2007 | 84°F | 54°F | 0" | -- |
| 2006 | 87°F | 54°F | 0" | -- |
| 2005 | 86°F | 55°F | 0" | -- |
| 2004 | 74°F | 58°F | 0" | -- |
| 2003 | 94°F | 62°F | 0" | -- |
| 2002 | 95°F | 64°F | 0" | -- |
| 2001 | 93°F | 61°F | 0" | -- |
| 2000 | 104°F | 78°F | 0" | -- |
| 1999 | 98°F | 54°F | 0" | -- |
| 1998 | 82°F | 56°F | 0" | -- |
| 1997 | 79°F | 49°F | 0" | -- |
| 1996 | 86°F | 62°F | 0" | -- |
| 1995 | 103°F | 60°F | 0" | 0" |
| 1994 | 103°F | 57°F | 0" | 0" |
| 1993 | 82°F | 51°F | 0" | 0" |
| 1992 | 100°F | 55°F | 0" | 0" |
| 1991 | 102°F | 60°F | 0" | 0" |
| 1990 | 87°F | 55°F | 0" | 0" |
| 1989 | 66°F | 49°F | 2.03" | 0" |
| 1988 | 88°F | 57°F | 0" | 0" |
| 1987 | 93°F | 52°F | 0" | 0" |
| 1986 | 62°F | 48°F | 1.04" | 0" |
| 1985 | 80°F | 55°F | 0" | 0" |
| 1984 | 105°F | 62°F | 0" | 0" |
| 1983 | 93°F | 53°F | 0" | 0" |
| 1982 | 70°F | 55°F | 1.02" | 0" |
| 1981 | 92°F | 57°F | 0" | 0" |
| 1980 | 79°F | 58°F | 0.48" | 0" |
| 1979 | 91°F | 48°F | 0" | 0" |
| 1978 | 74°F | 50°F | 0" | 0" |
| 1977 | 73°F | 57°F | 0.03" | 0" |
| 1976 | 92°F | 58°F | 0" | 0" |
| 1975 | 92°F | 66°F | 0" | 0" |
| 1974 | 103°F | 65°F | 0" | 0" |
| 1973 | 91°F | 59°F | 0" | 0" |
| 1972 | 88°F | 54°F | 0" | 0" |
| 1971 | 103°F | 68°F | 0" | 0" |