Portola Valley Weather in March
Average highs run from 64°F on March 1 to 67°F on March 31, and lows from 44°F to 45°F. Normal precipitation for the month is 3.02 in over about 9 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
- 65°F
- Average low
- 45°F
- Precipitation
- 3.02 in
- Record high
- 85°FMar 12, 2005
- Record low
- 22°FMar 31, 2004
- Chance of a freeze
- 0%
- Daylight
- 11 h 23 min to 12 h 35 min
- Cloud cover
- 49%
- Humidity
- 83%
- Dew point
- 45°F
- Wind
- 6.9 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Mar 1 | 64°F | 44°F | 77°F 1954 | 31°F 1955 | 33% | 0% |
| Mar 2 | 64°F | 44°F | 78°F 1954 | 30°F 1971 | 33% | 0% |
| Mar 3 | 64°F | 44°F | 73°F 1954 | 32°F 1976 | 33% | 0% |
| Mar 4 | 64°F | 44°F | 76°F 1959 | 28°F 2012 | 33% | 0% |
| Mar 5 | 64°F | 44°F | 76°F 1959 | 32°F 1955 | 33% | 0% |
| Mar 6 | 64°F | 44°F | 75°F 1972 | 31°F 1971 | 32% | 0% |
| Mar 7 | 65°F | 44°F | 79°F 1955 | 32°F 1956 | 32% | 0% |
| Mar 8 | 65°F | 44°F | 76°F 1972 | 32°F 2001 | 32% | 0% |
| Mar 9 | 65°F | 44°F | 77°F 1955 | 33°F 1974 | 32% | 0% |
| Mar 10 | 65°F | 44°F | 82°F 2004 | 34°F 1960 | 31% | 0% |
| Mar 11 | 65°F | 44°F | 84°F 2004 | 32°F 2009 | 31% | 0% |
| Mar 12 | 65°F | 44°F | 85°F 2005 | 33°F 1954 | 31% | 0% |
| Mar 13 | 65°F | 45°F | 79°F 2007 | 31°F 1954 | 31% | 0% |
| Mar 14 | 65°F | 45°F | 83°F 2004 | 32°F 1954 | 30% | 0% |
| Mar 15 | 65°F | 45°F | 78°F 2014 | 35°F 1954 | 30% | 0% |
| Mar 16 | 65°F | 45°F | 84°F 2004 | 37°F 1980 | 30% | 0% |
| Mar 17 | 65°F | 45°F | 85°F 2004 | 32°F 1963 | 30% | 0% |
| Mar 18 | 66°F | 45°F | 85°F 2004 | 32°F 1963 | 29% | 0% |
| Mar 19 | 66°F | 45°F | 83°F 2004 | 34°F 1963 | 29% | 0% |
| Mar 20 | 66°F | 45°F | 80°F 1960 | 36°F 1956 | 29% | 0% |
| Mar 21 | 66°F | 45°F | 82°F 2004 | 33°F 1955 | 29% | 0% |
| Mar 22 | 66°F | 45°F | 76°F 1997 | 35°F 1955 | 29% | 0% |
| Mar 23 | 66°F | 45°F | 75°F 2007 | 31°F 1994 | 28% | 0% |
| Mar 24 | 66°F | 45°F | 78°F 2007 | 31°F 1994 | 28% | 0% |
| Mar 25 | 66°F | 45°F | 81°F 1970 | 33°F 1964 | 27% | 0% |
| Mar 26 | 66°F | 45°F | 82°F 1997 | 32°F 1980 | 27% | 0% |
| Mar 27 | 66°F | 45°F | 85°F 1988 | 34°F 1972 | 27% | 0% |
| Mar 28 | 66°F | 45°F | 81°F 1969 | 33°F 2004 | 26% | 0% |
| Mar 29 | 66°F | 45°F | 80°F 1968 | 28°F 2004 | 26% | 0% |
| Mar 30 | 67°F | 45°F | 83°F 1968 | 34°F 1977 | 25% | 0% |
| Mar 31 | 67°F | 45°F | 77°F 2011 | 22°F 2004 | 25% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- March 1
- sunrise 6:40 AM, sunset 6:03 PM
- March 31
- sunrise 6:56 AM, sunset 7:31 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00047339 (Redwood City), public domain. Records: NOAA GHCN-Daily, station USC00046646, 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.