Weather on September 4
Oceanside, CA
55 Years of Data
Avg High
78°F
Avg Low
62°F
Warmest
2022
85°F avg
Coldest
1989
62°F avg
About This Date
September 4th in Oceanside, CA typically brings pleasant fall weather, with average highs around 78°F and lows near 62°F. Over 55 years of records, the warmest September 4th was in 2022 (85°F average), while the coldest was 1989 (62°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 4th dates historically, with the wettest September 4th recording 1.83" of rain. The last decade has been 3.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.7°F warmer on this date compared to 20-30 years ago.
Planning for September 4th in Oceanside, CA? Great weather for outdoor activities.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 79° | 63° | 71° | — | — |
| 2024 | 84° | 61° | 72° | — | — |
| 2023 | 77° | 59° | 68° | — | — |
| 2022warmest | 96° | 73° | 85° | — | — |
| 2021 | 82° | 59° | 71° | — | — |
| 2020 | 81° | 62° | 71° | — | — |
| 2019 | 88° | 66° | 77° | — | — |
| 2018 | 75° | 62° | 69° | — | — |
| 2017 | 77° | 65° | 71° | — | — |
| 2016 | 75° | 65° | 70° | — | — |
| 2015 | 77° | 62° | 70° | — | — |
| 2014 | 80° | 61° | 70° | — | — |
| 2013 | 84° | 66° | 75° | — | — |
| 2012 | 88° | 60° | 74° | — | — |
| 2011 | 76° | 56° | 66° | — | — |
| 2010 | 75° | 56° | 65° | — | — |
| 2009 | 87° | 63° | 75° | — | — |
| 2008 | 80° | 62° | 71° | — | — |
| 2007 | 88° | 65° | 76° | — | — |
| 2006 | 81° | 61° | 71° | — | — |
| 2005 | 73° | 58° | 65° | — | — |
| 2004 | 82° | 53° | 68° | — | — |
| 2003 | 80° | 62° | 71° | — | — |
| 2002 | 77° | 62° | 70° | — | — |
| 2001 | 77° | 65° | 71° | — | — |
| 2000 | 75° | 51° | 63° | — | — |
| 1999 | 72° | 59° | 65° | — | — |
| 1998 | 79° | 69° | 74° | — | — |
| 1997 | 77° | 70° | 73° | — | — |
| 1996 | 72° | 64° | 68° | — | — |
| 1995 | 72° | 63° | 67° | — | — |
| 1994 | 74° | 63° | 68° | — | — |
| 1993 | 70° | 65° | 67° | — | — |
| 1992 | 71° | 61° | 66° | — | — |
| 1991 | 67° | 63° | 65° | — | — |
| 1990 | 88° | 59° | 73° | — | — |
| 1989coldest | 70° | 55° | 62° | — | — |
| 1988 | 88° | 62° | 75° | — | — |
| 1987 | 71° | 64° | 68° | — | — |
| 1986 | 80° | 57° | 69° | — | — |
| 1985 | 73° | 60° | 67° | — | — |
| 1984 | 80° | 65° | 72° | — | — |
| 1983 | 76° | 68° | 72° | — | — |
| 1982 | 78° | 64° | 71° | — | — |
| 1981 | 74° | 66° | 70° | — | — |
| 1980 | 70° | 60° | 65° | — | — |
| 1979 | 76° | 61° | 68° | — | — |
| 1978 | 82° | 67° | 74° | — | — |
| 1977 | 78° | 59° | 69° | — | — |
| 1976 | 82° | 64° | 73° | 1.83" | — |
| 1975 | 76° | 60° | 68° | — | — |
| 1974 | 79° | 63° | 71° | — | — |
| 1973 | 73° | 63° | 68° | — | — |
| 1972 | 80° | 65° | 72° | — | — |
| 1971 | 77° | 57° | 67° | — | — |
55 years of data from OCEANSIDE MUNI AP