September weather in Fairfield, UT
The average temperature in Fairfield in September is 60.2°F (40.3°F–80.0°F). Average precipitation: 0.82 inches.
September is a fall month in Fairfield, and is warmer than the annual average of 47.6°F. Daily temperatures swing about 39.7°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 12h 15m. For travel, September is a comfortable month to visit.
Avg High
80.0°F
Avg Low
40.3°F
Precipitation
0.82 in
Daylight
12h 15m
September records in Fairfield
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 95.0°F (2019) | 28.0°F (1962) | 0.79 in (2008) |
| September 2 | 97.0°F (2024) | 30.9°F (1959) | 0.50 in (1954) |
| September 3 | 98.1°F (2022) | 28.9°F (1973) | 1.12 in (1983) |
| September 4 | 96.1°F (2022) | 30.9°F (1961) | 0.32 in (1992) |
| September 5 | 97.0°F (2020) | 30.9°F (1961) | 1.07 in (1970) |
| September 6 | 100.0°F (2024) | 30.0°F (2010) | 0.69 in (1981) |
| September 7 | 100.0°F (2022) | 28.9°F (2001) | 1.13 in (1991) |
| September 8 | 96.1°F (2017) | 28.9°F (1999) | 0.57 in (2002) |
| September 9 | 95.0°F (2021) | 21.9°F (1962) | 0.29 in (2006) |
| September 10 | 93.0°F (2021) | 21.9°F (1962) | 0.36 in (1982) |
| September 11 | 93.0°F (1990) | 28.0°F (1957) | 0.77 in (1977) |
| September 12 | 95.0°F (1990) | 24.1°F (1974) | 0.60 in (1958) |
| September 13 | 93.9°F (1990) | 28.0°F (1967) | 0.40 in (1982) |
| September 14 | 93.9°F (1990) | 21.9°F (1993) | 0.50 in (2013) |
| September 15 | 93.0°F (2000) | 23.0°F (1970) | 0.39 in (2017) |
| September 16 | 97.0°F (2000) | 24.1°F (1970) | 0.30 in (1996) |
| September 17 | 90.0°F (1956) | 27.0°F (1970) | 0.45 in (1961) |
| September 18 | 91.9°F (1962) | 21.9°F (1971) | 1.06 in (1978) |
| September 19 | 93.0°F (1962) | 21.0°F (1971) | 0.79 in (1997) |
| September 20 | 87.1°F (2001) | 23.0°F (1978) | 0.66 in (1989) |
| September 21 | 91.0°F (2021) | 21.9°F (1957) | 0.26 in (1984) |
| September 22 | 90.0°F (2010) | 19.0°F (1995) | 0.33 in (2006) |
| September 23 | 90.0°F (2001) | 16.0°F (1956) | 0.66 in (2000) |
| September 24 | 91.0°F (2001) | 21.0°F (1956) | 0.46 in (1984) |
| September 25 | 87.1°F (1952) | 18.0°F (1958) | 0.50 in (1955) |
| September 26 | 88.0°F (1952) | 19.9°F (1970) | 0.75 in (1982) |
| September 27 | 90.0°F (2010) | 21.9°F (1973) | 1.19 in (2014) |
| September 28 | 88.0°F (1989) | 18.0°F (1974) | 0.52 in (1982) |
| September 29 | 91.0°F (2024) | 18.0°F (1985) | 0.70 in (1982) |
| September 30 | 91.9°F (2024) | 18.0°F (1985) | 0.51 in (1911) |