September weather in Calistoga, CA
The average temperature in Calistoga in September is 69.8°F (52.2°F–87.4°F). Average precipitation: 0.12 inches.
September is a fall month in Calistoga, and is warmer than the annual average of 60.1°F. Daily temperatures swing about 35.2°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
87.4°F
Avg Low
52.2°F
Precipitation
0.12 in
Daylight
12h 14m
September records in Calistoga
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 109.9°F (2017) | 39.9°F (1931) | 0.01 in (1983) |
| September 2 | 111.9°F (2017) | 39.0°F (1931) | 0.00 in (1906) |
| September 3 | 108.0°F (2017) | 42.1°F (1931) | 0.40 in (1912) |
| September 4 | 109.9°F (1988) | 39.9°F (2015) | 0.00 in (1906) |
| September 5 | 109.0°F (1988) | 42.1°F (1931) | 2.40 in (1912) |
| September 6 | 111.9°F (2020) | 42.1°F (2001) | 0.61 in (1912) |
| September 7 | 118.0°F (2022) | 37.0°F (1931) | 0.17 in (1985) |
| September 8 | 106.0°F (1984) | 39.9°F (1931) | 0.87 in (1985) |
| September 9 | 111.0°F (2022) | 41.0°F (1933) | 0.90 in (1978) |
| September 10 | 109.0°F (1932) | 37.9°F (1931) | 0.11 in (2021) |
| September 11 | 105.1°F (2015) | 39.0°F (1931) | 0.09 in (1976) |
| September 12 | 111.0°F (1932) | 42.1°F (1931) | 0.00 in (1906) |
| September 13 | 104.0°F (1932) | 41.0°F (2012) | 0.07 in (1968) |
| September 14 | 109.0°F (1932) | 39.0°F (1982) | 0.06 in (1955) |
| September 15 | 100.9°F (1932) | 37.9°F (2006) | 0.33 in (1955) |
| September 16 | 100.9°F (1984) | 39.9°F (2015) | 1.18 in (1989) |
| September 17 | 106.0°F (1984) | 41.0°F (2012) | 0.82 in (1989) |
| September 18 | 102.0°F (1984) | 37.9°F (2008) | 2.99 in (1959) |
| September 19 | 107.1°F (1995) | 37.9°F (2008) | 1.14 in (2022) |
| September 20 | 102.9°F (2015) | 37.9°F (2004) | 0.27 in (1973) |
| September 21 | 104.0°F (1987) | 37.0°F (1931) | 0.30 in (1916) |
| September 22 | 104.0°F (2003) | 37.9°F (1988) | 0.39 in (1973) |
| September 23 | 100.9°F (1997) | 39.0°F (2010) | 0.23 in (1983) |
| September 24 | 104.0°F (1991) | 39.0°F (1931) | 0.65 in (1982) |
| September 25 | 102.9°F (2024) | 37.9°F (2007) | 0.55 in (1909) |
| September 26 | 105.1°F (2009) | 32.0°F (1982) | 0.85 in (1972) |
| September 27 | 102.9°F (2010) | 39.0°F (1982) | 1.87 in (1957) |
| September 28 | 102.9°F (2010) | 37.9°F (1931) | 0.60 in (1976) |
| September 29 | 102.9°F (1990) | 32.0°F (1982) | 0.26 in (1962) |
| September 30 | 104.0°F (1987) | 35.1°F (1984) | 0.29 in (1983) |