Weather on September 12 at Yosemite
Yosemite National Park
Based on 42 years of data from Mariposa, CA
Elevation Note: Yosemite sits at 4,000 ft. Expect temperatures 14°F cooler than the data shown below, which comes from Mariposa, CA at a lower elevation.
Planning Your Visit
September 12th in Yosemite National Park (via Mariposa, CA) typically brings warm fall weather, with average highs around 87°F and lows near 57°F — a 30°F daily swing. Over 42 years of records, the warmest September 12th was in 2014 (80°F average), while the coldest was 1972 (61°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 12th 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 12th in Yosemite? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 81°F | 54°F | -- | -- |
| 2024 | 80°F | 50°F | -- | -- |
| 2023 | 87°F | 59°F | -- | -- |
| 2022 | 89°F | 70°F | -- | -- |
| 2021 | 91°F | 62°F | -- | -- |
| 2020 | 86°F | 56°F | -- | -- |
| 2019 | 91°F | 55°F | -- | -- |
| 2018 | 81°F | 52°F | -- | -- |
| 2017 | 90°F | 67°F | -- | -- |
| 2016 | 82°F | 52°F | -- | -- |
| 2015 | 91°F | 69°F | -- | -- |
| 2014 | 97°F | 64°F | -- | -- |
| 2013 | 87°F | 59°F | -- | -- |
| 2012 | 91°F | 60°F | -- | -- |
| 2011 | 87°F | 56°F | -- | -- |
| 2010 | 89°F | 57°F | -- | -- |
| 2009 | 94°F | 63°F | -- | -- |
| 2008 | 90°F | 59°F | -- | -- |
| 2007 | 87°F | 60°F | -- | -- |
| 2006 | 94°F | 61°F | -- | -- |
| 2005 | 78°F | 45°F | -- | -- |
| 2004 | 92°F | 59°F | -- | -- |
| 2003 | 95°F | 61°F | -- | -- |
| 2002 | 94°F | 59°F | -- | -- |
| 2001 | 86°F | 56°F | -- | -- |
| 2000 | 93°F | 58°F | -- | -- |
| 1999 | 94°F | 57°F | -- | -- |
| 1998 | 87°F | 56°F | -- | -- |
| 1997 | 85°F | 55°F | -- | -- |
| 1996 | 79°F | 51°F | -- | -- |
| 1995 | 91°F | 58°F | -- | -- |
| 1994 | 72°F | 50°F | -- | -- |
| 1993 | 84°F | 55°F | -- | -- |
| 1992 | 82°F | 53°F | -- | -- |
| 1991 | 81°F | 56°F | -- | -- |
| 1990 | 83°F | 55°F | -- | -- |
| 1976 | 72°F | 52°F | 0.05" | 0" |
| 1975 | 85°F | 56°F | 0" | 0" |
| 1974 | 94°F | 60°F | 0" | 0" |
| 1973 | 87°F | 58°F | 0" | 0" |
| 1972 | 78°F | 44°F | 0" | 0" |
| 1971 | 95°F | 61°F | 0" | 0" |