Weather on September 18 at Pinnacles
Pinnacles National Park
Based on 55 years of data from Salinas, CA
Elevation Note: Pinnacles sits at 2,000 ft. Expect temperatures 7°F cooler than the data shown below, which comes from Salinas, CA at a lower elevation.
Planning Your Visit
September 18th in Pinnacles National Park (via Salinas, CA) typically brings pleasant fall weather, with average highs around 74°F and lows near 53°F. Over 55 years of records, the warmest September 18th was in 1984 (75°F average), while the coldest was 1978 (57°F) — a 18°F range across recorded history. Rain or other precipitation has occurred on about 4% of September 18th dates historically. The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
Planning for September 18th in Pinnacles? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 71°F | 60°F | 0" | -- |
| 2024 | 75°F | 56°F | 0" | -- |
| 2023 | 74°F | 57°F | 0" | -- |
| 2022 | 77°F | 60°F | 0.08" | -- |
| 2021 | 72°F | 60°F | 0" | -- |
| 2020 | 78°F | 61°F | 0" | -- |
| 2019 | 76°F | 50°F | 0" | -- |
| 2018 | 64°F | 54°F | 0" | -- |
| 2017 | 76°F | 58°F | 0" | -- |
| 2016 | 93°F | 48°F | 0" | -- |
| 2015 | 77°F | 49°F | 0" | -- |
| 2014 | 79°F | 60°F | 0" | -- |
| 2013 | 78°F | 48°F | 0" | -- |
| 2012 | 69°F | 54°F | 0" | -- |
| 2011 | 78°F | 46°F | -- | -- |
| 2010 | 73°F | 60°F | 0" | 0" |
| 2009 | 85°F | 55°F | 0" | 0" |
| 2008 | 69°F | 47°F | 0" | 0" |
| 2007 | 67°F | 51°F | 0" | 0" |
| 2006 | 76°F | 47°F | 0" | 0" |
| 2005 | 73°F | 46°F | 0" | 0" |
| 2004 | 70°F | 52°F | 0" | 0" |
| 2003 | 91°F | 52°F | 0" | 0" |
| 2002 | 78°F | 57°F | 0" | 0" |
| 2001 | 65°F | 53°F | 0" | 0" |
| 2000 | 82°F | 58°F | 0" | 0" |
| 1999 | 65°F | 54°F | 0" | 0" |
| 1998 | 74°F | 53°F | 0" | 0" |
| 1997 | 74°F | 54°F | 0" | 0" |
| 1996 | 85°F | 46°F | 0" | 0" |
| 1995 | 83°F | 53°F | 0" | 0" |
| 1994 | 74°F | 58°F | 0" | 0" |
| 1993 | 69°F | 51°F | 0" | 0" |
| 1992 | 73°F | 54°F | 0" | 0" |
| 1991 | 73°F | 53°F | 0" | 0" |
| 1990 | 66°F | 56°F | 0" | 0" |
| 1989 | 66°F | 51°F | 0.38" | 0" |
| 1988 | 85°F | 48°F | 0" | 0" |
| 1987 | 73°F | 57°F | 0" | 0" |
| 1986 | 68°F | 51°F | 0" | 0" |
| 1985 | 70°F | 50°F | 0" | 0" |
| 1984 | 87°F | 63°F | 0" | 0" |
| 1983 | 76°F | 57°F | 0" | 0" |
| 1982 | 77°F | 58°F | 0" | 0" |
| 1981 | 75°F | 56°F | 0" | 0" |
| 1980 | 73°F | 53°F | 0" | 0" |
| 1979 | 76°F | 60°F | 0" | 0" |
| 1978 | 69°F | 45°F | 0" | 0" |
| 1977 | 75°F | 49°F | 0" | 0" |
| 1976 | 70°F | 48°F | 0" | 0" |
| 1975 | 69°F | 54°F | 0" | 0" |
| 1974 | 68°F | 52°F | 0" | 0" |
| 1973 | 70°F | 53°F | 0" | 0" |
| 1972 | 72°F | 47°F | 0" | 0" |
| 1971 | 75°F | 58°F | 0" | 0" |