Basilemorin / CC0
San Marcos, CA Weather on April 12
April 12th in San Marcos, CA typically brings pleasant spring weather, with average highs around 73°F and lows near 51°F. Over 55 years of records, the warmest April 12th was in 2008 (76°F average), while the coldest was 1976 (52°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 13% of April 12th dates historically, with the wettest April 12th recording 1.73" of rain. Temperatures on this date have remained relatively stable over the past several decades.
What to Expect on April 12
Planning for April 12th in San Marcos, CA? Great weather for outdoor activities.
April 12 Weather Records for San Marcos
- •The all-time record high for April 12th in San Marcos, CA is 94°F, set in 2008.
- •The coldest April 12th on record dropped to 40°F in 1991.
- •Temperatures have reached 90°F or higher on April 12th in 1 of the last 55 years.
- •Last year (1971), April 12th was 5°F warmer than the long-term average.
Frequently Asked Questions
What was the warmest April 12 ever in San Marcos?
The warmest April 12 in San Marcos, CA reached 94°F in 2008. That is 21°F above the long-term average high of 73°F.
What was the coldest April 12 ever in San Marcos?
The coldest April 12 in San Marcos, CA dropped to 40°F in 1991. That is 11°F below the long-term average low of 51°F.
What is the average temperature on April 12 in San Marcos?
On April 12, San Marcos averages a high of 73°F and a low of 51°F based on 55 years of NOAA weather observations from ESCONDIDO #2.
How many years of weather data are available for April 12 in San Marcos?
We have 55 years of weather records for April 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.
April 12 Weather History in San Marcos
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 85°F | 54°F | 0" | -- |
| 2024 | 66°F | 54°F | 0" | -- |
| 2023 | 65°F | 54°F | 0" | -- |
| 2022 | 69°F | 52°F | 0.03" | -- |
| 2021 | 71°F | 56°F | 0" | -- |
| 2020 | 59°F | 54°F | 0" | -- |
| 2019 | 72°F | 56°F | 0" | -- |
| 2018 | 69°F | 55°F | 0" | -- |
| 2017 | 78°F | 50°F | 0" | -- |
| 2016 | 74°F | 55°F | 0" | -- |
| 2015 | 77°F | 51°F | 0" | -- |
| 2014 | 69°F | 56°F | 0" | -- |
| 2013 | 74°F | 55°F | 0" | -- |
| 2012 | 65°F | 47°F | 0" | -- |
| 2011 | 71°F | 47°F | 0" | -- |
| 2010 | 60°F | 52°F | 1.73" | -- |
| 2009 | 64°F | 49°F | 0" | -- |
| 2008 | 94°F | 58°F | 0" | -- |
| 2007 | 63°F | 52°F | 0" | -- |
| 2006 | 66°F | 52°F | 0" | -- |
| 2005 | 80°F | 47°F | 0" | -- |
| 2004 | 82°F | 51°F | 0" | -- |
| 2003 | 74°F | 55°F | 0" | -- |
| 2002 | 74°F | 53°F | 0" | -- |
| 2001 | 65°F | 51°F | 0.23" | -- |
| 2000 | 84°F | 52°F | 0" | -- |
| 1999 | 60°F | 45°F | 1.52" | -- |
| 1998 | 61°F | 52°F | 1.52" | -- |
| 1997 | 73°F | 46°F | 0" | -- |
| 1996 | 76°F | 51°F | 0" | -- |
| 1995 | 80°F | 47°F | 0" | -- |
| 1994 | 88°F | 49°F | 0" | -- |
| 1993 | 76°F | 70°F | 0" | -- |
| 1992 | 75°F | 53°F | 0" | -- |
| 1991 | 71°F | 40°F | 0" | -- |
| 1990 | 85°F | 53°F | 0" | -- |
| 1989 | 65°F | 56°F | 0" | -- |
| 1988 | 88°F | 55°F | 0" | -- |
| 1987 | 81°F | 52°F | 0" | -- |
| 1986 | 59°F | 55°F | 0" | -- |
| 1985 | 82°F | 47°F | 0" | -- |
| 1984 | 80°F | 50°F | 0" | -- |
| 1983 | 60°F | 44°F | 0.43" | -- |
| 1982 | 70°F | 51°F | 0" | -- |
| 1981 | 73°F | 50°F | 0" | -- |
| 1980 | 85°F | 42°F | 0" | -- |
| 1979 | 73°F | 47°F | 0" | -- |
| 1978 | 71°F | 53°F | 0" | -- |
| 1977 | 72°F | 43°F | 0" | -- |
| 1976 | 62°F | 43°F | 0.2" | -- |
| 1975 | 66°F | 46°F | 0" | -- |
| 1974 | 81°F | 44°F | 0" | -- |
| 1973 | 73°F | 45°F | 0" | -- |
| 1972 | 68°F | 45°F | 0" | -- |
| 1971 | 78°F | 42°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.