San Marcos Weather in March
Average highs run from 69°F on March 1 to 73°F on March 31, and lows from 47°F to 50°F. Normal precipitation for the month is 2.20 in over about 6 wet days.
March day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
March at a glance
- Average high
- 71°F
- Average low
- 49°F
- Precipitation
- 2.20 in
- Record high
- 93°FMar 14, 2015
- Record low
- 38°FMar 2, 2023
- Chance of a freeze
- 0%
- Days of 90°F or more
- 0.7
- Daylight
- 11 h 30 min to 12 h 30 min
- Cloud cover
- 40%
- Humidity
- 66%
- Dew point
- 41°F
- Wind
- 7.8 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Mar 1 | 69°F | 47°F | 85°F 2013 | 42°F 2007 | 24% |
| Mar 2 | 69°F | 47°F | 83°F 2009 | 38°F 2023 | 24% |
| Mar 3 | 69°F | 48°F | 76°F 2020 | 41°F 2023 | 24% |
| Mar 4 | 70°F | 48°F | 81°F 2012 | 42°F 2023 | 24% |
| Mar 5 | 70°F | 48°F | 78°F 2011 | 44°F 2003 | 23% |
| Mar 6 | 70°F | 48°F | 81°F 2015 | 43°F 2000 | 23% |
| Mar 7 | 70°F | 48°F | 82°F 2015 | 43°F 1998 | 23% |
| Mar 8 | 70°F | 48°F | 89°F 2026 | 43°F 2012 | 22% |
| Mar 9 | 70°F | 48°F | 83°F 2014 | 44°F 2000 | 22% |
| Mar 10 | 70°F | 48°F | 78°F 2008 | 42°F 2010 | 21% |
| Mar 11 | 70°F | 49°F | 78°F 2007 | 43°F 2006 | 21% |
| Mar 12 | 71°F | 49°F | 84°F 2026 | 43°F 1999 | 21% |
| Mar 13 | 71°F | 49°F | 90°F 2015 | 43°F 2006 | 20% |
| Mar 14 | 71°F | 49°F | 93°F 2015 | 42°F 2002 | 20% |
| Mar 15 | 71°F | 49°F | 91°F 2015 | 45°F 1999 | 20% |
| Mar 16 | 71°F | 49°F | 88°F 2015 | 43°F 1999 | 19% |
| Mar 17 | 71°F | 49°F | 86°F 2026 | 44°F 2008 | 19% |
| Mar 18 | 71°F | 49°F | 84°F 2026 | 43°F 2002 | 19% |
| Mar 19 | 71°F | 49°F | 82°F 2026 | 41°F 2002 | 19% |
| Mar 20 | 72°F | 49°F | 84°F 2026 | 44°F 2012 | 18% |
| Mar 21 | 72°F | 50°F | 77°F 2026 | 44°F 1999 | 18% |
| Mar 22 | 72°F | 50°F | 75°F 2008 | 44°F 2006 | 18% |
| Mar 23 | 72°F | 50°F | 87°F 2022 | 44°F 2009 | 18% |
| Mar 24 | 72°F | 50°F | 77°F 2008 | 46°F 2009 | 17% |
| Mar 25 | 72°F | 50°F | 72°F 2015 | 46°F 1999 | 17% |
| Mar 26 | 72°F | 50°F | 84°F 2015 | 46°F 1999 | 17% |
| Mar 27 | 72°F | 50°F | 83°F 2015 | 46°F 2020 | 17% |
| Mar 28 | 72°F | 50°F | 82°F 2021 | 44°F 2007 | 16% |
| Mar 29 | 73°F | 50°F | 85°F 2004 | 42°F 1998 | 16% |
| Mar 30 | 73°F | 50°F | 87°F 2003 | 41°F 1998 | 16% |
| Mar 31 | 73°F | 50°F | 83°F 2021 | 46°F 1998 | 16% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (PDT).
- March 1
- sunrise 6:16 AM, sunset 5:46 PM
- March 31
- sunrise 6:38 AM, sunset 7:08 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00042863 (Escondido #2), public domain. Records: NOAA GHCN-Daily, station USW00003177, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.