Wing-Chi Poon / CC BY-SA 2.5
San Marcos, CA Weather on July 12
July 12th in San Marcos, CA typically brings warm summer weather, with average highs around 87°F and lows near 62°F — a 25°F daily swing. Over 55 years of records, the warmest July 12th was in 1990 (84°F average), while the coldest was 2010 (67°F) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 2% of July 12th dates historically. The last decade has been 2.6°F warmer on this date compared to 20-30 years ago.
What to Expect on July 12
Planning for July 12th in San Marcos, CA? Stay hydrated and seek shade during peak afternoon hours.
July 12 Weather Records for San Marcos
- •The all-time record high for July 12th in San Marcos, CA is 97°F, set in 2023.
- •The coldest July 12th on record dropped to 50°F in 1984.
- •Temperatures have reached 90°F or higher on July 12th in 16 of the last 55 years.
- •Last year (1971), July 12th was 5°F warmer than the long-term average.
Frequently Asked Questions
What was the warmest July 12 ever in San Marcos?
The warmest July 12 in San Marcos, CA reached 97°F in 2023. That is 10°F above the long-term average high of 87°F.
What was the coldest July 12 ever in San Marcos?
The coldest July 12 in San Marcos, CA dropped to 50°F in 1984. That is 12°F below the long-term average low of 62°F.
What is the average temperature on July 12 in San Marcos?
On July 12, San Marcos averages a high of 87°F and a low of 62°F based on 55 years of NOAA weather observations from ESCONDIDO #2.
How many years of weather data are available for July 12 in San Marcos?
We have 55 years of weather records for July 12 in San Marcos, CA, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
July 12 Weather History in San Marcos
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 88°F | 62°F | 0" | -- |
| 2024 | 91°F | 66°F | 0" | -- |
| 2023 | 97°F | 68°F | 0" | -- |
| 2022 | 86°F | 62°F | 0" | -- |
| 2021 | 86°F | 67°F | 0" | -- |
| 2020 | 97°F | 69°F | 0" | -- |
| 2019 | 90°F | 63°F | 0" | -- |
| 2018 | 91°F | 69°F | 0" | -- |
| 2017 | 90°F | 68°F | 0" | -- |
| 2016 | 84°F | 62°F | 0" | -- |
| 2015 | 84°F | 62°F | 0" | -- |
| 2014 | 85°F | 65°F | 0" | -- |
| 2013 | 88°F | 66°F | 0" | -- |
| 2012 | 87°F | 65°F | 0" | -- |
| 2011 | 77°F | 61°F | 0" | -- |
| 2010 | 71°F | 63°F | 0" | -- |
| 2009 | 80°F | 64°F | 0" | -- |
| 2008 | 74°F | 65°F | 0" | -- |
| 2007 | 73°F | 64°F | 0" | -- |
| 2006 | 96°F | 64°F | 0" | -- |
| 2005 | 88°F | 59°F | 0" | -- |
| 2004 | 97°F | 62°F | 0" | -- |
| 2003 | 95°F | 69°F | 0" | -- |
| 2002 | 89°F | 65°F | 0" | -- |
| 2001 | 84°F | 60°F | 0" | -- |
| 2000 | 80°F | 60°F | 0" | -- |
| 1999 | 96°F | 66°F | 0" | -- |
| 1998 | 88°F | 60°F | 0" | -- |
| 1997 | 80°F | 62°F | 0" | -- |
| 1996 | 84°F | 61°F | 0" | -- |
| 1995 | 86°F | 57°F | 0" | -- |
| 1994 | 88°F | 60°F | 0" | -- |
| 1993 | 84°F | 61°F | 0" | -- |
| 1992 | 82°F | 67°F | 0.13" | -- |
| 1991 | 82°F | 58°F | 0" | -- |
| 1990 | 97°F | 71°F | 0" | -- |
| 1989 | 81°F | 62°F | 0" | -- |
| 1988 | 84°F | 57°F | 0" | -- |
| 1987 | 84°F | 58°F | 0" | -- |
| 1986 | 82°F | 62°F | 0" | -- |
| 1985 | 93°F | 66°F | 0" | -- |
| 1984 | 91°F | 50°F | 0" | -- |
| 1983 | 96°F | 62°F | 0" | -- |
| 1982 | 88°F | 59°F | 0" | -- |
| 1981 | 87°F | 61°F | 0" | -- |
| 1980 | 90°F | 59°F | 0" | -- |
| 1979 | 88°F | 56°F | 0" | -- |
| 1978 | 89°F | 58°F | 0" | -- |
| 1977 | 83°F | 58°F | 0" | -- |
| 1976 | 81°F | 64°F | 0" | -- |
| 1975 | 84°F | 63°F | 0" | -- |
| 1974 | 85°F | 60°F | 0" | -- |
| 1973 | 81°F | 60°F | 0" | -- |
| 1972 | 89°F | 60°F | 0" | -- |
| 1971 | 92°F | 56°F | 0" | -- |
Based on 55 years of data from NOAA station: ESCONDIDO #2
Monthly Climate Averages
Historical temperature and precipitation averages for San Marcos, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.