Millbrae Weather in April
Average highs run from 64°F on April 1 to 67°F on April 30, and lows from 48°F to 50°F. Normal precipitation for the month is 1.36 in over about 6 wet days.
April day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
April at a glance
- Average high
- 66°F
- Average low
- 49°F
- Precipitation
- 1.36 in
- Record high
- 92°FApr 8, 1989
- Record low
- 36°FApr 27, 1955
- Chance of a freeze
- 0%
- Daylight
- 12 h 38 min to 13 h 44 min
- Cloud cover
- 55%
- Humidity
- 84%
- Dew point
- 48°F
- Wind
- 11.2 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 |
|---|---|---|---|---|---|
| Apr 1 | 64°F | 48°F | 84°F 2021 | 37°F 1976 | 28% |
| Apr 2 | 65°F | 48°F | 85°F 2000 | 39°F 1963 | 27% |
| Apr 3 | 65°F | 48°F | 79°F 1961 | 39°F 1956 | 27% |
| Apr 4 | 65°F | 48°F | 82°F 1985 | 40°F 1950 | 27% |
| Apr 5 | 65°F | 49°F | 84°F 1989 | 39°F 1975 | 26% |
| Apr 6 | 65°F | 49°F | 89°F 1989 | 38°F 1975 | 26% |
| Apr 7 | 65°F | 49°F | 89°F 1989 | 39°F 1948 | 26% |
| Apr 8 | 65°F | 49°F | 92°F 1989 | 41°F 1953 | 25% |
| Apr 9 | 65°F | 49°F | 90°F 1989 | 38°F 1953 | 25% |
| Apr 10 | 65°F | 49°F | 91°F 1988 | 41°F 1946 | 24% |
| Apr 11 | 65°F | 49°F | 84°F 1988 | 38°F 1953 | 24% |
| Apr 12 | 65°F | 49°F | 88°F 1947 | 39°F 1956 | 23% |
| Apr 13 | 65°F | 49°F | 84°F 1947 | 39°F 1972 | 23% |
| Apr 14 | 66°F | 49°F | 87°F 1984 | 39°F 1950 | 22% |
| Apr 15 | 66°F | 49°F | 83°F 1966 | 38°F 1955 | 22% |
| Apr 16 | 66°F | 49°F | 81°F 1999 | 40°F 1975 | 21% |
| Apr 17 | 66°F | 49°F | 83°F 2016 | 40°F 1963 | 21% |
| Apr 18 | 66°F | 49°F | 83°F 1950 | 39°F 1967 | 20% |
| Apr 19 | 66°F | 49°F | 86°F 2009 | 40°F 1967 | 20% |
| Apr 20 | 66°F | 49°F | 91°F 2009 | 38°F 1967 | 19% |
| Apr 21 | 66°F | 49°F | 86°F 2009 | 39°F 1968 | 19% |
| Apr 22 | 66°F | 50°F | 83°F 2013 | 42°F 1946 | 18% |
| Apr 23 | 66°F | 50°F | 88°F 2019 | 41°F 1960 | 18% |
| Apr 24 | 66°F | 50°F | 81°F 2004 | 39°F 1960 | 17% |
| Apr 25 | 66°F | 50°F | 87°F 2004 | 41°F 1974 | 17% |
| Apr 26 | 67°F | 50°F | 90°F 2004 | 42°F 1950 | 16% |
| Apr 27 | 67°F | 50°F | 87°F 2004 | 36°F 1955 | 16% |
| Apr 28 | 67°F | 50°F | 89°F 1981 | 39°F 1967 | 16% |
| Apr 29 | 67°F | 50°F | 92°F 1981 | 40°F 1950 | 15% |
| Apr 30 | 67°F | 50°F | 90°F 1996 | 41°F 1946 | 15% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (PDT).
- April 1
- sunrise 6:55 AM, sunset 7:33 PM
- April 30
- sunrise 6:15 AM, sunset 7:59 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00023234 (San Francisco Intl AP), public domain. Records: NOAA GHCN-Daily, station USW00023234, 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.