San Luis Obispo climate

San Luis Obispo Weather in March

NOAA 1991-2020 normals for San Luis Obispo Poly, 2.5 km from San Luis Obispo

Average highs run from 66°F on March 1 to 68°F on March 31, and lows from 45°F to 47°F. Normal precipitation for the month is 3.89 in over about 9 wet days.

March day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at San Luis Obispo, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

March at a glance

Average high
67°F
Average low
46°F
Precipitation
3.89 in
Record high
97°FMar 17, 2026
Record low
31°FMar 4, 2002
Chance of a freeze
3%
Daylight
11 h 26 min to 12 h 33 min
Cloud cover
46%
Humidity
76%
Dew point
45°F
Wind
7.8 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation.

DateNormal highNormal lowRecord highRecord lowChance wet
Mar 166°F45°F86°F 202233°F 201134%
Mar 266°F45°F81°F 202234°F 200233%
Mar 366°F45°F80°F 201733°F 200233%
Mar 466°F45°F85°F 201231°F 200233%
Mar 567°F46°F76°F 201533°F 199932%
Mar 667°F46°F82°F 201534°F 201732%
Mar 767°F46°F83°F 201532°F 199931%
Mar 867°F46°F85°F 200432°F 201231%
Mar 967°F46°F84°F 201734°F 200230%
Mar 1067°F46°F84°F 200436°F 202530%
Mar 1167°F46°F89°F 200734°F 200929%
Mar 1267°F46°F90°F 200736°F 199929%
Mar 1367°F46°F89°F 201532°F 200628%
Mar 1467°F46°F90°F 201536°F 200628%
Mar 1567°F46°F88°F 201432°F 200227%
Mar 1667°F46°F90°F 201432°F 200227%
Mar 1767°F46°F97°F 202635°F 200227%
Mar 1868°F46°F91°F 202634°F 202026%
Mar 1968°F46°F97°F 202634°F 200226%
Mar 2068°F46°F91°F 202636°F 200225%
Mar 2168°F46°F84°F 202635°F 200025%
Mar 2268°F47°F87°F 202236°F 200024%
Mar 2368°F47°F92°F 202637°F 200624%
Mar 2468°F47°F87°F 202637°F 199923%
Mar 2568°F47°F83°F 201538°F 200223%
Mar 2668°F47°F90°F 201535°F 202022%
Mar 2768°F47°F78°F 202637°F 202022%
Mar 2868°F47°F86°F 200436°F 200721%
Mar 2968°F47°F86°F 202637°F 200021%
Mar 3068°F47°F84°F 200138°F 200020%
Mar 3168°F47°F89°F 201134°F 200820%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at San Luis Obispo, in percent.0102030401102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (PDT).

March 1
sunrise 6:32 AM, sunset 5:58 PM
March 31
sunrise 6:50 AM, sunset 7:23 PM

Every day of March: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00047851 (San Luis Obispo Poly), public domain. Records: NOAA GHCN-Daily, station USW00093206, 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.