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Norwalk, CA Weather on August 25
August 25th in Norwalk, CA typically brings warm summer weather, with average highs around 87°F and lows near 65°F. Over 55 years of records, the warmest August 25th was in 1981 (85°F average), while the coldest was 1978 (68°F) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 2% of August 25th dates historically. Temperatures on this date have remained relatively stable over the past several decades.
What to Expect on August 25
Planning for August 25th in Norwalk, CA? Stay hydrated and seek shade during peak afternoon hours.
August 25 Weather Records for Norwalk
- •The all-time record high for August 25th in Norwalk, CA is 103°F, set in 1981.
- •The coldest August 25th on record dropped to 56°F in 1978.
- •Temperatures have reached 90°F or higher on August 25th in 15 of the last 55 years.
Frequently Asked Questions
What was the warmest August 25 ever in Norwalk?
The warmest August 25 in Norwalk, CA reached 103°F in 1981. That is 16°F above the long-term average high of 87°F.
What was the coldest August 25 ever in Norwalk?
The coldest August 25 in Norwalk, CA dropped to 56°F in 1978. That is 9°F below the long-term average low of 65°F.
What is the average temperature on August 25 in Norwalk?
On August 25, Norwalk averages a high of 87°F and a low of 65°F based on 55 years of NOAA weather observations from FULLERTON MUNI AP.
How many years of weather data are available for August 25 in Norwalk?
We have 55 years of weather records for August 25 in Norwalk, CA, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
August 25 Weather History in Norwalk
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 86°F | 69°F | 0" | -- |
| 2024 | 85°F | 63°F | 0" | -- |
| 2023 | 89°F | 63°F | 0" | -- |
| 2022 | 88°F | 68°F | 0" | -- |
| 2021 | 92°F | 65°F | 0" | -- |
| 2020 | 95°F | 70°F | 0" | -- |
| 2019 | 93°F | 67°F | 0" | -- |
| 2018 | 83°F | 69°F | 0" | -- |
| 2017 | 79°F | 67°F | 0" | -- |
| 2016 | 80°F | 67°F | 0" | -- |
| 2015 | 89°F | 71°F | 0" | -- |
| 2014 | 86°F | 66°F | 0" | -- |
| 2013 | 92°F | 64°F | 0" | -- |
| 2012 | 83°F | 69°F | 0" | -- |
| 2011 | 96°F | 66°F | 0" | -- |
| 2010 | 94°F | 68°F | 0" | -- |
| 2009 | 96°F | 63°F | 0" | -- |
| 2008 | 92°F | 67°F | 0" | -- |
| 2007 | 86°F | 67°F | 0" | -- |
| 2006 | 83°F | 65°F | 0" | -- |
| 2005 | 97°F | 65°F | 0" | -- |
| 2004 | 81°F | 63°F | 0" | -- |
| 2003 | 90°F | 68°F | 0.04" | -- |
| 2002 | 86°F | 58°F | 0" | -- |
| 2001 | 84°F | 64°F | 0" | -- |
| 2000 | 86°F | 67°F | 0" | -- |
| 1999 | 94°F | 65°F | 0" | -- |
| 1998 | 83°F | 67°F | 0" | -- |
| 1997 | 90°F | 68°F | 0" | -- |
| 1996 | 88°F | 64°F | 0" | -- |
| 1995 | 89°F | 58°F | 0" | -- |
| 1994 | 86°F | 63°F | 0" | -- |
| 1993 | 88°F | 63°F | 0" | -- |
| 1992 | 84°F | 64°F | 0" | -- |
| 1991 | 79°F | 65°F | 0" | -- |
| 1990 | 77°F | 62°F | 0" | -- |
| 1989 | 77°F | 64°F | 0" | -- |
| 1988 | 92°F | 68°F | 0" | -- |
| 1987 | 74°F | 63°F | 0" | -- |
| 1986 | 88°F | 61°F | 0" | -- |
| 1985 | 97°F | 66°F | 0" | -- |
| 1984 | 79°F | 70°F | 0" | -- |
| 1983 | 87°F | 63°F | 0" | -- |
| 1982 | 85°F | 67°F | 0" | -- |
| 1981 | 103°F | 67°F | 0" | -- |
| 1980 | 87°F | 63°F | 0" | -- |
| 1979 | 86°F | 65°F | 0" | -- |
| 1978 | 80°F | 56°F | 0" | -- |
| 1977 | 83°F | 65°F | 0" | -- |
| 1976 | 87°F | 66°F | 0" | -- |
| 1975 | 82°F | 62°F | 0" | -- |
| 1974 | 87°F | 62°F | 0" | -- |
| 1973 | 77°F | 65°F | 0" | -- |
| 1972 | 76°F | 66°F | 0" | -- |
| 1971 | 87°F | 68°F | 0" | -- |
Based on 55 years of data from NOAA station: FULLERTON MUNI AP
Monthly Climate Averages
Historical temperature and precipitation averages for Norwalk, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.