September weather in Delta, UT
The average temperature in Delta in September is 63.9°F (45.6°F–82.2°F). Average precipitation: 0.71 inches.
September is a fall month in Delta, and is warmer than the annual average of 50.6°F. Daily temperatures swing about 36.6°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 12h 15m. For travel, September is a comfortable month to visit.
Avg High
82.2°F
Avg Low
45.6°F
Precipitation
0.71 in
Daylight
12h 15m
September records in Delta
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 104.0°F (2022) | 37.0°F (2005) | 0.52 in (1960) |
| September 2 | 105.1°F (2022) | 32.0°F (1973) | 0.25 in (2003) |
| September 3 | 105.1°F (2022) | 34.0°F (1964) | 0.57 in (1983) |
| September 4 | 102.9°F (2022) | 32.0°F (2004) | 0.15 in (1939) |
| September 5 | 102.0°F (2022) | 34.0°F (1999) | 1.09 in (1970) |
| September 6 | 106.0°F (2022) | 37.9°F (2008) | 0.46 in (1965) |
| September 7 | 104.0°F (2022) | 32.0°F (2001) | 0.34 in (1980) |
| September 8 | 100.9°F (2022) | 36.0°F (1941) | 0.20 in (1981) |
| September 9 | 98.1°F (1990) | 28.0°F (2001) | 0.51 in (2008) |
| September 10 | 96.1°F (1990) | 33.1°F (1962) | 0.29 in (1982) |
| September 11 | 98.1°F (1990) | 30.0°F (2010) | 0.44 in (2019) |
| September 12 | 98.1°F (1990) | 30.9°F (1974) | 0.37 in (1975) |
| September 13 | 96.1°F (1990) | 33.1°F (1978) | 0.54 in (1982) |
| September 14 | 98.1°F (1990) | 27.0°F (2003) | 0.54 in (2006) |
| September 15 | 99.0°F (2000) | 30.0°F (1970) | 0.43 in (2017) |
| September 16 | 97.0°F (2000) | 30.9°F (1970) | 0.44 in (1996) |
| September 17 | 97.0°F (2000) | 28.9°F (1965) | 0.58 in (1978) |
| September 18 | 93.9°F (1938) | 21.9°F (2003) | 0.53 in (1978) |
| September 19 | 95.0°F (1956) | 24.1°F (1988) | 0.40 in (1985) |
| September 20 | 91.0°F (2005) | 21.0°F (2003) | 0.31 in (1994) |
| September 21 | 91.9°F (2020) | 25.0°F (1978) | 0.60 in (1952) |
| September 22 | 91.9°F (1966) | 26.1°F (2004) | 0.70 in (2017) |
| September 23 | 93.0°F (1938) | 26.1°F (2006) | 0.33 in (2000) |
| September 24 | 95.0°F (2001) | 26.1°F (2000) | 0.59 in (2017) |
| September 25 | 93.0°F (1938) | 25.0°F (1958) | 0.58 in (1955) |
| September 26 | 97.0°F (1938) | 25.0°F (1970) | 0.79 in (1982) |
| September 27 | 100.9°F (1938) | 25.0°F (1996) | 1.45 in (2014) |
| September 28 | 93.9°F (2024) | 26.1°F (1959) | 0.46 in (1982) |
| September 29 | 97.0°F (2024) | 24.1°F (1999) | 0.95 in (1982) |
| September 30 | 93.0°F (2024) | 23.0°F (2007) | 0.34 in (1944) |