Weather on September 1
Oceanside, CA
55 Years of Data
Avg High
77°F
Avg Low
62°F
Warmest
1998
79°F avg
Coldest
1989
60°F avg
About This Date
September 1st in Oceanside, CA typically brings pleasant fall weather, with average highs around 77°F and lows near 62°F. Over 54 years of records, the warmest September 1st was in 1998 (79°F average), while the coldest was 1989 (60°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 1st dates historically, with the wettest September 1st recording 0.84" of rain. The last decade has been 3.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.6°F warmer on this date compared to 20-30 years ago.
Planning for September 1st in Oceanside, CA? Great weather for outdoor activities.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 61° | 71° | — | — |
| 2024 | 80° | 67° | 73° | — | — |
| 2023 | 82° | 65° | 73° | — | — |
| 2022 | 90° | 61° | 75° | — | — |
| 2021 | 78° | 66° | 72° | — | — |
| 2020 | 78° | 66° | 72° | — | — |
| 2019 | 80° | 66° | 73° | — | — |
| 2018 | 78° | 63° | 70° | — | — |
| 2017 | 91° | 66° | 79° | — | — |
| 2016 | 76° | 67° | 71° | — | — |
| 2015 | 79° | 70° | 74° | — | — |
| 2014 | 79° | 63° | 71° | — | — |
| 2013 | 84° | 68° | 76° | — | — |
| 2012 | 83° | 56° | 69° | — | — |
| 2011 | 75° | 58° | 66° | — | — |
| 2010 | 75° | 54° | 64° | — | — |
| 2009 | 83° | 64° | 73° | — | — |
| 2008 | 78° | 61° | 69° | — | — |
| 2007 | 85° | 66° | 75° | — | — |
| 2006 | 77° | 62° | 70° | — | — |
| 2005 | 74° | 57° | 65° | — | — |
| 2004 | 78° | 58° | 68° | — | — |
| 2003 | 77° | 63° | 70° | — | — |
| 2002 | 88° | 58° | 73° | — | — |
| 2001 | 77° | 59° | 68° | — | — |
| 2000 | 75° | 54° | 64° | — | — |
| 1999 | 72° | 63° | 67° | — | — |
| 1998warmest | 90° | 69° | 79° | 0.84" | — |
| 1997 | 74° | 63° | 68° | — | — |
| 1996 | 75° | 66° | 71° | — | — |
| 1995 | 73° | 62° | 68° | — | — |
| 1994 | 71° | 62° | 67° | — | — |
| 1993 | 70° | 66° | 68° | — | — |
| 1992 | 69° | 63° | 66° | — | — |
| 1991 | 66° | 62° | 64° | — | — |
| 1990 | 83° | 60° | 71° | — | — |
| 1989coldest | 69° | 52° | 60° | — | — |
| 1988 | 68° | 64° | 66° | — | — |
| 1987 | 71° | 65° | 68° | — | — |
| 1986 | 68° | 66° | 67° | — | — |
| 1985 | 77° | 66° | 72° | — | — |
| 1984 | 81° | 58° | 69° | — | — |
| 1983 | 79° | 63° | 71° | — | — |
| 1982 | 76° | 61° | 68° | — | — |
| 1980 | 73° | 63° | 68° | — | — |
| 1979 | 74° | 66° | 70° | — | — |
| 1978 | 73° | 62° | 68° | — | — |
| 1977 | 72° | 60° | 66° | — | — |
| 1976 | 76° | 58° | 67° | — | — |
| 1975 | 75° | 55° | 65° | — | — |
| 1974 | 75° | 54° | 64° | — | — |
| 1973 | 75° | 56° | 65° | — | — |
| 1972 | 79° | 67° | 73° | — | — |
| 1971 | 78° | 61° | 69° | — | — |
54 years of data from OCEANSIDE MUNI AP