September weather in Danville, CA
The average temperature in Danville in September is 69.9°F (59.7°F–80.0°F). Average precipitation: 0.12 inches.
September is a fall month in Danville, and is warmer than the annual average of 58.4°F. Daily temperatures swing about 20.3°F between overnight low and afternoon high. Expect about 1 days with precipitation. Daylight averages about 12h 14m. For travel, September is one of the best months of the year to visit.
Avg High
80.0°F
Avg Low
59.7°F
Precipitation
0.12 in
Daylight
12h 14m
September records in Danville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.9°F (1976) | 46.0°F (1964) | 0.00 in (1952) |
| September 2 | 104.0°F (1955) | 42.1°F (1961) | 0.28 in (2000) |
| September 3 | 107.1°F (1955) | 44.1°F (1962) | 0.00 in (1952) |
| September 4 | 107.1°F (1955) | 42.1°F (1962) | 0.00 in (1952) |
| September 5 | 107.1°F (1988) | 46.0°F (1960) | 0.00 in (1952) |
| September 6 | 105.1°F (1988) | 36.0°F (2003) | 0.00 in (1952) |
| September 7 | 104.0°F (2022) | 45.0°F (1962) | 0.01 in (1969) |
| September 8 | 105.1°F (1957) | 44.1°F (2005) | 0.10 in (1985) |
| September 9 | 100.9°F (1977) | 43.0°F (2001) | 0.45 in (1985) |
| September 10 | 99.0°F (1976) | 43.0°F (2005) | 0.44 in (1978) |
| September 11 | 99.0°F (1953) | 39.0°F (1994) | 0.05 in (1976) |
| September 12 | 97.0°F (1953) | 41.0°F (2001) | 0.01 in (2009) |
| September 13 | 102.0°F (1971) | 42.1°F (2005) | 0.19 in (1963) |
| September 14 | 107.1°F (1971) | 41.0°F (2005) | 0.29 in (2009) |
| September 15 | 105.1°F (1971) | 39.0°F (2006) | 0.00 in (1952) |
| September 16 | 106.0°F (1971) | 39.9°F (2006) | 0.21 in (1982) |
| September 17 | 98.1°F (1971) | 43.0°F (2007) | 0.57 in (1989) |
| September 18 | 96.1°F (1984) | 41.0°F (1965) | 0.72 in (1959) |
| September 19 | 93.9°F (1995) | 39.0°F (2007) | 2.01 in (1959) |
| September 20 | 98.1°F (2000) | 35.1°F (2007) | 0.22 in (2004) |
| September 21 | 96.1°F (1967) | 41.0°F (2004) | 0.06 in (2022) |
| September 22 | 100.0°F (1987) | 43.0°F (2007) | 1.06 in (2013) |
| September 23 | 100.9°F (2003) | 42.1°F (2007) | 0.16 in (1973) |
| September 24 | 100.0°F (2002) | 44.1°F (1958) | 0.41 in (1982) |
| September 25 | 100.0°F (1964) | 44.1°F (1988) | 0.45 in (2014) |
| September 26 | 98.1°F (1952) | 44.1°F (1988) | 0.25 in (1972) |
| September 27 | 105.1°F (1963) | 42.1°F (1990) | 0.49 in (1986) |
| September 28 | 95.0°F (1958) | 37.0°F (1959) | 0.48 in (1957) |
| September 29 | 96.1°F (2010) | 37.0°F (2007) | 0.74 in (1976) |
| September 30 | 100.0°F (1966) | 39.9°F (1971) | 0.81 in (1983) |