Weather on September 21 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 21st in Pinnacles National Park (via Salinas, CA) typically brings pleasant fall weather, with average highs around 75°F and lows near 53°F. Over 55 years of records, the warmest September 21st was in 2003 (78°F average), while the coldest was 1986 (58°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 2% 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 Pinnacles? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 76°F | 59°F | 0" | -- |
| 2024 | 69°F | 56°F | 0" | -- |
| 2023 | 73°F | 57°F | 0" | -- |
| 2022 | 77°F | 57°F | 0" | -- |
| 2021 | 87°F | 58°F | 0" | -- |
| 2020 | 71°F | 56°F | 0" | -- |
| 2019 | 88°F | 52°F | 0" | -- |
| 2018 | 71°F | 49°F | 0" | -- |
| 2017 | 71°F | 53°F | 0" | -- |
| 2016 | 67°F | 55°F | 0" | -- |
| 2015 | 84°F | 55°F | 0" | -- |
| 2014 | 73°F | 62°F | 0" | -- |
| 2013 | 76°F | 61°F | 0.36" | -- |
| 2012 | 72°F | 49°F | 0" | -- |
| 2011 | 69°F | 54°F | 0" | -- |
| 2010 | 68°F | 52°F | 0" | 0" |
| 2009 | 73°F | 53°F | 0" | 0" |
| 2008 | 70°F | 54°F | 0" | 0" |
| 2007 | 74°F | 51°F | 0" | 0" |
| 2006 | 71°F | 46°F | 0" | 0" |
| 2005 | 82°F | 54°F | 0" | 0" |
| 2004 | 81°F | 44°F | 0" | 0" |
| 2003 | 96°F | 59°F | 0" | 0" |
| 2002 | 71°F | 53°F | 0" | 0" |
| 2001 | 66°F | 54°F | 0" | 0" |
| 2000 | 76°F | 60°F | 0" | 0" |
| 1999 | 69°F | 49°F | 0" | 0" |
| 1998 | 68°F | 56°F | 0" | 0" |
| 1997 | 81°F | 49°F | 0" | 0" |
| 1996 | 83°F | 45°F | 0" | 0" |
| 1995 | 70°F | 57°F | 0" | 0" |
| 1994 | 72°F | 58°F | 0" | 0" |
| 1993 | 68°F | 49°F | 0" | 0" |
| 1992 | 74°F | 55°F | 0" | 0" |
| 1991 | 69°F | 56°F | 0" | 0" |
| 1990 | 70°F | 56°F | 0" | 0" |
| 1989 | 83°F | 51°F | 0" | 0" |
| 1988 | 70°F | 55°F | 0" | 0" |
| 1987 | 76°F | 52°F | 0" | 0" |
| 1986 | 69°F | 46°F | 0" | 0" |
| 1985 | 82°F | 50°F | 0" | 0" |
| 1984 | 74°F | 55°F | 0" | 0" |
| 1983 | 88°F | 67°F | 0" | 0" |
| 1982 | 88°F | 49°F | 0" | 0" |
| 1981 | 79°F | 54°F | 0" | 0" |
| 1980 | 76°F | 50°F | 0" | 0" |
| 1979 | 70°F | 54°F | 0" | 0" |
| 1978 | 79°F | 45°F | 0" | 0" |
| 1977 | 79°F | 51°F | 0" | 0" |
| 1976 | 75°F | 49°F | 0" | 0" |
| 1975 | 74°F | 56°F | 0" | 0" |
| 1974 | 68°F | 52°F | 0" | 0" |
| 1973 | 71°F | 51°F | 0" | 0" |
| 1972 | 84°F | 52°F | 0" | 0" |
| 1971 | 71°F | 58°F | 0" | 0" |