September weather in Upton, WY
The average temperature in Upton in September is 59.6°F (44.3°F–74.8°F). Average precipitation: 1.20 inches.
September is a fall month in Upton, and is warmer than the annual average of 44.8°F. Daily temperatures swing about 30.5°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 12h 17m. For travel, September is a comfortable month to visit.
Avg High
74.8°F
Avg Low
44.3°F
Precipitation
1.20 in
Snow
0.1 in
September records in Upton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 98.1°F (1958) | 32.0°F (1965) | 1.00 in (1909) |
| September 2 | 99.0°F (2024) | 30.0°F (1952) | 1.35 in (1986) |
| September 3 | 97.0°F (1960) | 23.0°F (1974) | 0.60 in (1968) |
| September 4 | 99.0°F (2022) | 28.0°F (1962) | 0.52 in (1987) |
| September 5 | 100.0°F (2020) | 28.9°F (1968) | 1.09 in (1971) |
| September 6 | 100.0°F (1978) | 30.0°F (1956) | 1.02 in (1990) |
| September 7 | 100.0°F (2022) | 32.0°F (2010) | 0.58 in (1992) |
| September 8 | 100.9°F (1958) | 30.0°F (1962) | 0.60 in (1989) |
| September 9 | 96.1°F (2012) | 27.0°F (1976) | 1.23 in (2022) |
| September 10 | 95.0°F (2021) | 26.1°F (1962) | 1.85 in (2003) |
| September 11 | 95.0°F (1959) | 23.0°F (1989) | 0.50 in (2014) |
| September 12 | 93.0°F (1990) | 21.9°F (1921) | 1.03 in (1909) |
| September 13 | 93.0°F (2017) | 21.9°F (1974) | 0.91 in (1982) |
| September 14 | 93.0°F (1955) | 21.0°F (1993) | 1.75 in (1928) |
| September 15 | 91.9°F (2000) | 25.0°F (1915) | 0.98 in (2017) |
| September 16 | 93.9°F (2000) | 25.0°F (1965) | 0.60 in (1917) |
| September 17 | 91.9°F (2000) | 23.0°F (1965) | 0.55 in (1923) |
| September 18 | 93.9°F (1958) | 19.9°F (1971) | 0.40 in (2002) |
| September 19 | 93.0°F (1914) | 23.0°F (1971) | 0.44 in (1967) |
| September 20 | 91.9°F (1956) | 19.9°F (1927) | 1.25 in (1955) |
| September 21 | 91.9°F (1922) | 17.1°F (1983) | 0.61 in (1998) |
| September 22 | 96.1°F (1958) | 21.0°F (1995) | 1.60 in (1910) |
| September 23 | 90.0°F (1958) | 24.1°F (1955) | 0.88 in (2016) |
| September 24 | 91.9°F (2020) | 17.1°F (1926) | 0.96 in (1955) |
| September 25 | 91.9°F (2014) | 6.1°F (1926) | 0.90 in (1959) |
| September 26 | 95.0°F (2024) | 15.1°F (1972) | 0.89 in (1915) |
| September 27 | 91.9°F (1952) | 17.1°F (1926) | 0.40 in (2013) |
| September 28 | 91.9°F (2024) | 21.0°F (1985) | 1.06 in (1923) |
| September 29 | 96.1°F (2024) | 17.1°F (1985) | 2.23 in (1923) |
| September 30 | 89.1°F (1963) | 15.1°F (1958) | 1.08 in (2014) |