September weather in Isleton, CA
The average temperature in Isleton in September is 72.7°F (58.7°F–86.7°F). Average precipitation: 0.06 inches.
September is a fall month in Isleton, and is warmer than the annual average of 62.5°F. Daily temperatures swing about 28°F between overnight low and afternoon high. Expect about 0 days with precipitation. Daylight averages about 12h 14m. For travel, September is a comfortable month to visit.
Avg High
86.7°F
Avg Low
58.7°F
Precipitation
0.06 in
Daylight
12h 14m
September records in Isleton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 104.0°F (1955) | 48.0°F (1957) | 0.08 in (2000) |
| September 2 | 108.0°F (1955) | 46.9°F (1959) | 0.00 in (1955) |
| September 3 | 108.0°F (1955) | 46.9°F (1964) | 0.00 in (1955) |
| September 4 | 109.0°F (1955) | 46.0°F (1960) | 0.00 in (1955) |
| September 5 | 106.0°F (1988) | 46.0°F (1962) | 0.05 in (1970) |
| September 6 | 107.1°F (1988) | 48.0°F (1973) | 0.04 in (1978) |
| September 7 | 109.9°F (2020) | 48.0°F (1964) | 0.00 in (1955) |
| September 8 | 108.0°F (1957) | 48.0°F (1956) | 0.01 in (1958) |
| September 9 | 104.0°F (2015) | 45.0°F (1964) | 0.16 in (1985) |
| September 10 | 105.1°F (2015) | 46.9°F (1955) | 0.01 in (1978) |
| September 11 | 107.1°F (2015) | 46.0°F (1962) | 0.00 in (1955) |
| September 12 | 106.0°F (2015) | 45.0°F (1972) | 0.04 in (1976) |
| September 13 | 105.1°F (1979) | 43.0°F (1970) | 0.10 in (1963) |
| September 14 | 104.0°F (1971) | 41.0°F (1980) | 0.00 in (1955) |
| September 15 | 100.0°F (1971) | 43.0°F (1970) | 0.02 in (1955) |
| September 16 | 102.9°F (1979) | 41.0°F (2015) | 0.15 in (1982) |
| September 17 | 102.0°F (1979) | 44.1°F (1972) | 0.42 in (1989) |
| September 18 | 100.0°F (2011) | 44.1°F (1965) | 0.50 in (1959) |
| September 19 | 100.9°F (2000) | 43.0°F (1965) | 1.25 in (1959) |
| September 20 | 100.0°F (1958) | 43.0°F (1965) | 0.07 in (1977) |
| September 21 | 100.0°F (2011) | 43.0°F (1960) | 0.50 in (2013) |
| September 22 | 102.9°F (2003) | 46.9°F (1965) | 0.16 in (1999) |
| September 23 | 100.9°F (2009) | 44.1°F (1960) | 0.05 in (1973) |
| September 24 | 99.0°F (1964) | 46.0°F (1977) | 0.42 in (1982) |
| September 25 | 100.0°F (2010) | 44.1°F (1958) | 0.25 in (2014) |
| September 26 | 98.1°F (2009) | 43.0°F (1955) | 0.31 in (1982) |
| September 27 | 100.0°F (2009) | 45.0°F (1955) | 0.34 in (1998) |
| September 28 | 99.0°F (2010) | 44.1°F (1955) | 0.04 in (1961) |
| September 29 | 99.0°F (2010) | 42.1°F (1955) | 0.85 in (1976) |
| September 30 | 102.0°F (1966) | 44.1°F (1959) | 0.63 in (1983) |