April weather in South San Francisco, CA
The average temperature in South San Francisco in April is 57.3°F (49.1°F–65.6°F). Average precipitation: 1.36 inches.
April is a spring month in South San Francisco, and is cooler than the annual average of 58.7°F. Daily temperatures swing about 16.5°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 59m. For travel, April is a comfortable month to visit.
Avg High
65.6°F
Avg Low
49.1°F
Precipitation
1.36 in
Daylight
12h 59m
April records in South San Francisco
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| April 1 | 84.0°F (2021) | 37.0°F (1976) | 1.22 in (1974) |
| April 2 | 84.9°F (2000) | 39.0°F (1963) | 2.30 in (1958) |
| April 3 | 79.0°F (1961) | 39.0°F (1956) | 0.76 in (1958) |
| April 4 | 82.0°F (1985) | 39.9°F (1950) | 0.81 in (1975) |
| April 5 | 84.0°F (1989) | 39.0°F (1975) | 0.74 in (1969) |
| April 6 | 89.1°F (1989) | 37.9°F (1975) | 1.46 in (1967) |
| April 7 | 89.1°F (1989) | 39.0°F (1948) | 0.70 in (2015) |
| April 8 | 91.9°F (1989) | 41.0°F (1953) | 0.58 in (1965) |
| April 9 | 90.0°F (1989) | 37.9°F (1953) | 0.96 in (1965) |
| April 10 | 91.0°F (1988) | 41.0°F (1946) | 1.54 in (1982) |
| April 11 | 84.0°F (1988) | 37.9°F (1953) | 1.04 in (2026) |
| April 12 | 88.0°F (1947) | 39.0°F (1956) | 1.31 in (2003) |
| April 13 | 84.0°F (1947) | 39.0°F (1972) | 0.76 in (2012) |
| April 14 | 87.1°F (1984) | 39.0°F (1950) | 0.70 in (1963) |
| April 15 | 82.9°F (1966) | 37.9°F (1955) | 1.02 in (1978) |
| April 16 | 81.0°F (1999) | 39.9°F (1975) | 0.64 in (2000) |
| April 17 | 82.9°F (2016) | 39.9°F (1963) | 0.80 in (1957) |
| April 18 | 82.9°F (1950) | 39.0°F (1967) | 0.42 in (1984) |
| April 19 | 86.0°F (2009) | 39.9°F (1967) | 1.25 in (1988) |
| April 20 | 91.0°F (2009) | 37.9°F (1967) | 0.69 in (2001) |
| April 21 | 86.0°F (2009) | 39.0°F (1968) | 0.83 in (1961) |
| April 22 | 82.9°F (2013) | 42.1°F (1946) | 0.60 in (1988) |
| April 23 | 88.0°F (2019) | 41.0°F (1960) | 0.60 in (1983) |
| April 24 | 81.0°F (2004) | 39.0°F (1960) | 0.34 in (1983) |
| April 25 | 87.1°F (2004) | 41.0°F (1974) | 0.48 in (1994) |
| April 26 | 90.0°F (2004) | 42.1°F (1950) | 0.94 in (1978) |
| April 27 | 87.1°F (2004) | 36.0°F (1955) | 0.89 in (1953) |
| April 28 | 89.1°F (1981) | 39.0°F (1967) | 0.60 in (1951) |
| April 29 | 91.9°F (1981) | 39.9°F (1950) | 0.73 in (1948) |
| April 30 | 90.0°F (1996) | 41.0°F (1946) | 0.71 in (1983) |