September weather in Novato, CA
The average temperature in Novato in September is 67.6°F (54.4°F–80.7°F). Average precipitation: 0.07 inches.
September is a fall month in Novato, and is warmer than the annual average of 59.5°F. Daily temperatures swing about 26.3°F between overnight low and afternoon high. Expect about 1 days with precipitation. Daylight averages about 12h 14m. For travel, September is a comfortable month to visit.
Avg High
80.7°F
Avg Low
54.4°F
Precipitation
0.07 in
Daylight
12h 14m
September records in Novato
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 109.9°F (2017) | 46.0°F (1904) | 0.02 in (2000) |
| September 2 | 108.0°F (2017) | 37.9°F (1894) | 0.09 in (2000) |
| September 3 | 104.0°F (1950) | 48.0°F (1970) | 0.00 in (1894) |
| September 4 | 104.0°F (1950) | 36.0°F (1894) | 0.00 in (1894) |
| September 5 | 99.0°F (2008) | 35.1°F (1894) | 0.00 in (1894) |
| September 6 | 109.0°F (1958) | 37.0°F (1894) | 0.00 in (1894) |
| September 7 | 109.9°F (1904) | 46.0°F (1965) | 0.09 in (1969) |
| September 8 | 108.0°F (1904) | 39.9°F (1894) | 0.01 in (2025) |
| September 9 | 100.0°F (1904) | 39.9°F (1894) | 1.16 in (1978) |
| September 10 | 99.0°F (1951) | 37.0°F (1894) | 0.61 in (1978) |
| September 11 | 100.9°F (1955) | 34.0°F (1894) | 0.07 in (1895) |
| September 12 | 105.1°F (1979) | 36.0°F (1894) | 1.02 in (1895) |
| September 13 | 105.1°F (1979) | 35.1°F (1894) | 0.54 in (1895) |
| September 14 | 106.0°F (1971) | 37.9°F (1894) | 0.13 in (1997) |
| September 15 | 106.0°F (1971) | 39.9°F (1894) | 0.01 in (1997) |
| September 16 | 100.0°F (1971) | 39.0°F (1894) | 0.84 in (1989) |
| September 17 | 99.0°F (2025) | 39.0°F (1894) | 0.29 in (1989) |
| September 18 | 99.0°F (2000) | 36.0°F (1894) | 4.39 in (1959) |
| September 19 | 102.0°F (2000) | 36.0°F (1894) | 0.98 in (1977) |
| September 20 | 97.0°F (1964) | 35.1°F (1894) | 0.87 in (1977) |
| September 21 | 100.0°F (1947) | 44.1°F (1955) | 0.59 in (2013) |
| September 22 | 100.9°F (1956) | 43.0°F (1955) | 0.48 in (1904) |
| September 23 | 102.0°F (2024) | 36.0°F (1894) | 3.03 in (1904) |
| September 24 | 100.9°F (1964) | 37.9°F (1894) | 1.30 in (1904) |
| September 25 | 100.0°F (1964) | 39.0°F (1894) | 1.02 in (1904) |
| September 26 | 99.0°F (1963) | 39.9°F (1894) | 0.29 in (1904) |
| September 27 | 99.0°F (2024) | 36.0°F (1894) | 0.94 in (1957) |
| September 28 | 99.0°F (2010) | 37.0°F (1894) | 0.53 in (1957) |
| September 29 | 96.1°F (1966) | 35.1°F (1894) | 1.61 in (1894) |
| September 30 | 100.9°F (1980) | 32.0°F (1894) | 0.23 in (1971) |