September weather in Granger, WY
The average temperature in Granger in September is 57.4°F (43.5°F–71.3°F). Average precipitation: 1.09 inches. Average snowfall is 0.3 inches.
September is a fall month in Granger, and is warmer than the annual average of 43.2°F. Daily temperatures swing about 27.8°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 12h 16m. For travel, September is a comfortable month to visit.
Avg High
71.3°F
Avg Low
43.5°F
Precipitation
1.09 in
Snow
0.3 in
September records in Granger
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 90.0°F (1969) | 32.0°F (2008) | 0.80 in (2008) |
| September 2 | 91.0°F (1969) | 30.9°F (1986) | 0.15 in (1983) |
| September 3 | 90.0°F (2022) | 28.0°F (1973) | 0.50 in (1985) |
| September 4 | 91.0°F (2022) | 33.1°F (1962) | 0.95 in (2023) |
| September 5 | 93.0°F (2022) | 32.0°F (1971) | 0.75 in (2007) |
| September 6 | 93.0°F (2022) | 30.0°F (1975) | 0.53 in (1963) |
| September 7 | 93.0°F (2022) | 30.0°F (1975) | 0.54 in (1984) |
| September 8 | 93.9°F (2022) | 30.0°F (1989) | 1.40 in (1983) |
| September 9 | 86.0°F (2022) | 25.0°F (1962) | 0.90 in (1986) |
| September 10 | 88.0°F (1969) | 18.0°F (2020) | 0.22 in (1975) |
| September 11 | 89.1°F (1959) | 21.9°F (2014) | 1.44 in (2019) |
| September 12 | 88.0°F (1990) | 21.9°F (2014) | 0.42 in (1958) |
| September 13 | 88.0°F (1990) | 26.1°F (1967) | 0.50 in (2016) |
| September 14 | 84.0°F (1990) | 27.0°F (1957) | 0.20 in (2016) |
| September 15 | 88.0°F (1992) | 28.0°F (1982) | 1.21 in (2022) |
| September 16 | 84.9°F (2000) | 19.9°F (1965) | 0.63 in (1996) |
| September 17 | 82.9°F (2010) | 16.0°F (1965) | 0.74 in (1959) |
| September 18 | 82.9°F (1962) | 5.0°F (1965) | 0.46 in (1961) |
| September 19 | 84.9°F (2010) | 19.9°F (1965) | 0.68 in (1997) |
| September 20 | 84.9°F (1966) | 19.9°F (1965) | 0.80 in (2022) |
| September 21 | 82.0°F (1966) | 17.1°F (1983) | 0.28 in (1959) |
| September 22 | 88.0°F (2024) | 19.0°F (2000) | 0.59 in (2000) |
| September 23 | 84.0°F (1966) | 19.9°F (2000) | 0.97 in (2000) |
| September 24 | 82.9°F (1966) | 19.9°F (2000) | 1.40 in (1986) |
| September 25 | 82.0°F (1966) | 17.1°F (1984) | 0.40 in (2017) |
| September 26 | 82.9°F (2010) | 21.0°F (1996) | 0.05 in (2025) |
| September 27 | 82.0°F (1963) | 21.9°F (1964) | 1.47 in (2014) |
| September 28 | 84.0°F (1966) | 17.1°F (1984) | 0.30 in (1982) |
| September 29 | 84.9°F (2024) | 21.9°F (1959) | 0.15 in (2007) |
| September 30 | 84.9°F (2024) | 12.9°F (1985) | 0.48 in (2022) |