Weather on September 5
Irvine, CA
55 Years of Data
Avg High
90°F
Avg Low
62°F
Warmest
1984
89°F avg
Coldest
2023
63°F avg
About This Date
September 5th in Irvine, CA typically brings hot fall weather, with average highs around 90°F and lows near 62°F — a 28°F daily swing. Over 55 years of records, the warmest September 5th was in 1984 (89°F average), while the coldest was 2023 (63°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 5th dates historically, with the wettest September 5th recording 1.04" of rain. The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
Planning for September 5th in Irvine, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 90° | 64° | 77° | — | — |
| 2024 | 104° | 69° | 87° | — | — |
| 2023coldest | 68° | 58° | 63° | — | — |
| 2022 | 98° | 70° | 84° | — | — |
| 2021 | 91° | 67° | 79° | — | — |
| 2020 | 105° | 60° | 83° | — | — |
| 2019 | 94° | 71° | 82° | — | — |
| 2018 | 86° | 62° | 74° | — | — |
| 2017 | 93° | 69° | 81° | — | — |
| 2016 | 78° | 66° | 72° | — | — |
| 2015 | 90° | 66° | 78° | — | — |
| 2014 | 91° | 68° | 80° | — | — |
| 2013 | 99° | 63° | 81° | — | — |
| 2012 | 98° | 65° | 81° | — | — |
| 2011 | 91° | 58° | 74° | — | — |
| 2010 | 96° | 52° | 74° | — | — |
| 2009 | 95° | 62° | 79° | — | — |
| 2008 | 95° | 60° | 78° | — | — |
| 2007 | 89° | 60° | 75° | — | — |
| 2006 | 102° | 62° | 82° | — | — |
| 2005 | 92° | 56° | 74° | — | — |
| 2004 | 105° | 65° | 85° | — | — |
| 2003 | 100° | 65° | 82° | — | — |
| 2002 | 87° | 66° | 77° | — | — |
| 2001 | 84° | 64° | 74° | — | — |
| 2000 | 86° | 54° | 70° | — | — |
| 1999 | 79° | 59° | 69° | — | — |
| 1998 | 86° | 67° | 76° | — | — |
| 1997 | 100° | 69° | 85° | — | — |
| 1996 | 89° | 63° | 76° | — | — |
| 1995 | 98° | 73° | 86° | — | — |
| 1994 | 93° | 61° | 77° | — | — |
| 1993 | 83° | 58° | 70° | — | — |
| 1992 | 86° | 54° | 70° | — | — |
| 1991 | 77° | 61° | 69° | — | — |
| 1990 | 93° | 60° | 77° | — | — |
| 1989 | 95° | 53° | 74° | — | — |
| 1988 | 104° | 68° | 86° | — | — |
| 1987 | 82° | 64° | 73° | — | — |
| 1986 | 85° | 63° | 74° | — | — |
| 1985 | 71° | 60° | 66° | 1.04" | — |
| 1984warmest | 108° | 70° | 89° | — | — |
| 1983 | 84° | 66° | 75° | — | — |
| 1982 | 97° | 67° | 82° | — | — |
| 1981 | 75° | — | — | — | — |
| 1980 | 82° | 58° | 70° | — | — |
| 1979 | 89° | 42° | 66° | — | — |
| 1978 | 79° | 66° | 72° | — | — |
| 1977 | 89° | 62° | 76° | — | — |
| 1976 | 91° | 67° | 79° | — | — |
| 1975 | 89° | 55° | 72° | — | — |
| 1974 | 90° | 60° | 75° | — | — |
| 1973 | 72° | 61° | 66° | — | — |
| 1972 | 91° | 62° | 77° | — | — |
| 1971 | 86° | 57° | 72° | — | — |
55 years of data from IRVINE RCH