September weather in Richmond, CA
The average temperature in Richmond in September is 65.4°F (56.2°F–74.7°F). Average precipitation: 0.03 inches.
September is a fall month in Richmond, and is warmer than the annual average of 58.8°F. Daily temperatures swing about 18.5°F between overnight low and afternoon high. Expect about 0 days with precipitation. Daylight averages about 12h 14m. For travel, September is one of the best months of the year to visit.
Avg High
74.7°F
Avg Low
56.2°F
Precipitation
0.03 in
Daylight
12h 14m
September records in Richmond
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.0°F (2017) | 50.0°F (1983) | 0.03 in (2000) |
| September 2 | 104.0°F (2017) | 46.0°F (1983) | 0.00 in (1951) |
| September 3 | 106.0°F (2017) | 48.9°F (1961) | 0.00 in (1951) |
| September 4 | 95.0°F (2004) | 52.0°F (1960) | 0.00 in (1951) |
| September 5 | 96.1°F (2004) | 50.0°F (1981) | 0.00 in (1951) |
| September 6 | 102.9°F (2020) | 53.1°F (1951) | 0.00 in (1951) |
| September 7 | 93.0°F (1976) | 52.0°F (1965) | 0.00 in (1951) |
| September 8 | 98.1°F (1984) | 51.1°F (1978) | 0.28 in (1985) |
| September 9 | 95.0°F (1976) | 52.0°F (1961) | 0.33 in (1978) |
| September 10 | 93.9°F (1979) | 50.0°F (1984) | 0.17 in (1978) |
| September 11 | 100.0°F (1979) | 52.0°F (1964) | 0.00 in (1951) |
| September 12 | 102.0°F (1979) | 51.1°F (1985) | 0.03 in (1963) |
| September 13 | 98.1°F (1971) | 51.1°F (1952) | 0.10 in (1963) |
| September 14 | 107.1°F (1971) | 46.0°F (1970) | 0.00 in (1951) |
| September 15 | 107.1°F (1971) | 50.0°F (1955) | 0.00 in (1951) |
| September 16 | 89.1°F (1958) | 48.9°F (1967) | 1.01 in (1989) |
| September 17 | 95.0°F (1968) | 48.0°F (1985) | 0.29 in (1961) |
| September 18 | 90.0°F (2000) | 48.0°F (1965) | 2.05 in (1959) |
| September 19 | 93.0°F (2002) | 48.9°F (1965) | 0.71 in (1977) |
| September 20 | 96.1°F (2015) | 48.9°F (1978) | 0.18 in (1973) |
| September 21 | 99.0°F (2003) | 50.0°F (1970) | 0.53 in (2013) |
| September 22 | 96.1°F (2003) | 50.0°F (1985) | 0.10 in (1973) |
| September 23 | 93.9°F (1956) | 48.9°F (1972) | 0.12 in (1990) |
| September 24 | 95.0°F (1978) | 48.9°F (1993) | 0.33 in (1982) |
| September 25 | 97.0°F (2016) | 48.9°F (1972) | 0.18 in (1982) |
| September 26 | 97.0°F (2016) | 50.0°F (1988) | 0.35 in (1972) |
| September 27 | 95.0°F (1958) | 48.0°F (1971) | 1.38 in (1957) |
| September 28 | 97.0°F (2010) | 48.9°F (1986) | 0.50 in (1976) |
| September 29 | 95.0°F (1966) | 48.9°F (1965) | 0.17 in (1989) |
| September 30 | 96.1°F (2001) | 43.0°F (1983) | 0.79 in (1983) |