Abrget47j / CC BY-SA 3.0
Irvine, CA Weather on October 9
October 9th in Irvine, CA typically brings warm fall weather, with average highs around 83°F and lows near 57°F — a 26°F daily swing. Over 55 years of records, the warmest October 9th was in 2015 (85°F average), while the coldest was 2013 (60°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 4% of October 9th dates historically. The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
What to Expect on October 9
Planning for October 9th in Irvine, CA? Stay hydrated and seek shade during peak afternoon hours.
October 9 Weather Records for Irvine
- •The all-time record high for October 9th in Irvine, CA is 105°F, set in 2015.
- •The coldest October 9th on record dropped to 47°F in 1975.
- •Temperatures have reached 90°F or higher on October 9th in 11 of the last 55 years.
Frequently Asked Questions
What was the warmest October 9 ever in Irvine?
The warmest October 9 in Irvine, CA reached 105°F in 2015. That is 22°F above the long-term average high of 83°F.
What was the coldest October 9 ever in Irvine?
The coldest October 9 in Irvine, CA dropped to 47°F in 1975. That is 10°F below the long-term average low of 57°F.
What is the average temperature on October 9 in Irvine?
On October 9, Irvine averages a high of 83°F and a low of 57°F based on 55 years of NOAA weather observations from IRVINE RCH.
How many years of weather data are available for October 9 in Irvine?
We have 55 years of weather records for October 9 in Irvine, CA, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
October 9 Weather History in Irvine
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 79°F | 56°F | 0" | -- |
| 2024 | 84°F | 58°F | 0" | -- |
| 2023 | 75°F | 54°F | 0" | -- |
| 2022 | 82°F | 62°F | 0" | -- |
| 2021 | 78°F | 57°F | 0" | -- |
| 2020 | 84°F | 60°F | 0" | -- |
| 2019 | 80°F | 60°F | 0" | -- |
| 2018 | 80°F | 60°F | 0" | -- |
| 2017 | 93°F | 63°F | 0" | -- |
| 2016 | 89°F | 60°F | 0" | -- |
| 2015 | 105°F | 65°F | 0" | -- |
| 2014 | 85°F | 62°F | 0" | -- |
| 2013 | 68°F | 51°F | 0.12" | -- |
| 2012 | 81°F | 57°F | 0" | -- |
| 2011 | 83°F | 50°F | 0" | -- |
| 2010 | 85°F | 52°F | 0" | -- |
| 2009 | 77°F | 54°F | 0" | -- |
| 2008 | 90°F | 59°F | 0" | -- |
| 2007 | 83°F | 52°F | 0" | -- |
| 2006 | 74°F | 50°F | 0" | -- |
| 2005 | 77°F | 52°F | -- | -- |
| 2004 | 84°F | 52°F | 0" | -- |
| 2003 | 80°F | 59°F | -- | -- |
| 2002 | 83°F | 58°F | 0" | -- |
| 2001 | 81°F | 60°F | 0" | -- |
| 2000 | 74°F | 59°F | 0" | -- |
| 1999 | 99°F | 57°F | 0" | -- |
| 1998 | 85°F | 50°F | 0" | -- |
| 1997 | 90°F | 53°F | 0" | -- |
| 1996 | 86°F | 61°F | 0" | -- |
| 1995 | 79°F | 62°F | 0" | -- |
| 1994 | 101°F | 55°F | 0" | -- |
| 1993 | 79°F | 54°F | 0" | -- |
| 1992 | 84°F | 50°F | 0" | -- |
| 1991 | 92°F | 55°F | 0" | -- |
| 1990 | 95°F | 59°F | 0" | -- |
| 1989 | 79°F | 57°F | 0" | -- |
| 1988 | 100°F | 52°F | 0" | -- |
| 1987 | 76°F | 62°F | 0" | -- |
| 1986 | 75°F | 62°F | 0" | -- |
| 1985 | 74°F | 58°F | 0" | -- |
| 1984 | 79°F | 64°F | 0" | -- |
| 1983 | 79°F | 62°F | 0" | -- |
| 1982 | 86°F | -- | 0" | -- |
| 1981 | 73°F | 52°F | 0" | -- |
| 1980 | 67°F | 60°F | 0" | -- |
| 1979 | 81°F | 59°F | 0" | -- |
| 1978 | 90°F | 56°F | 0" | -- |
| 1977 | 87°F | 58°F | 0" | -- |
| 1976 | 98°F | 51°F | 0" | -- |
| 1975 | 76°F | 47°F | 0" | -- |
| 1974 | 67°F | 57°F | 0.01" | -- |
| 1973 | 70°F | 52°F | 0" | -- |
| 1972 | 71°F | -- | 0" | -- |
| 1971 | 87°F | 53°F | 0" | -- |
Based on 55 years of data from NOAA station: IRVINE RCH
Monthly Climate Averages
Historical temperature and precipitation averages for Irvine, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.