September weather in Lemmon, SD
The average temperature in Lemmon in September is 62.0°F (47.3°F–76.8°F). Average precipitation: 1.48 inches.
September is a fall month in Lemmon, and is warmer than the annual average of 45.7°F. Daily temperatures swing about 29.5°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 18m. For travel, September is a comfortable month to visit.
Avg High
76.8°F
Avg Low
47.3°F
Precipitation
1.48 in
Daylight
12h 18m
September records in Lemmon
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 105.1°F (1929) | 35.1°F (1930) | 0.73 in (1963) |
| September 2 | 104.0°F (1960) | 32.0°F (1974) | 0.80 in (1926) |
| September 3 | 100.0°F (1925) | 32.0°F (1918) | 0.87 in (1973) |
| September 4 | 102.9°F (1960) | 30.9°F (1962) | 1.18 in (2023) |
| September 5 | 105.1°F (1978) | 30.0°F (1965) | 1.45 in (1910) |
| September 6 | 102.9°F (1978) | 27.0°F (1929) | 1.60 in (2010) |
| September 7 | 105.1°F (1931) | 32.0°F (1929) | 1.77 in (1941) |
| September 8 | 102.0°F (1959) | 27.0°F (1929) | 2.62 in (2013) |
| September 9 | 98.1°F (1998) | 28.9°F (2020) | 1.26 in (2013) |
| September 10 | 98.1°F (2012) | 32.0°F (1962) | 1.57 in (2003) |
| September 11 | 95.0°F (1990) | 28.9°F (1989) | 0.87 in (1978) |
| September 12 | 98.1°F (2017) | 27.0°F (1989) | 1.23 in (1961) |
| September 13 | 93.9°F (1990) | 25.0°F (1949) | 1.67 in (2024) |
| September 14 | 97.0°F (1948) | 25.0°F (1993) | 1.22 in (2017) |
| September 15 | 102.9°F (1948) | 21.0°F (1934) | 0.91 in (2010) |
| September 16 | 97.0°F (2002) | 28.0°F (1916) | 1.02 in (2025) |
| September 17 | 98.1°F (1920) | 28.9°F (1965) | 0.98 in (1977) |
| September 18 | 95.0°F (1933) | 28.0°F (1929) | 2.10 in (1996) |
| September 19 | 91.9°F (1941) | 21.9°F (1918) | 0.72 in (1996) |
| September 20 | 93.0°F (1922) | 25.0°F (1927) | 1.93 in (1955) |
| September 21 | 98.1°F (1922) | 23.0°F (1995) | 0.84 in (2023) |
| September 22 | 95.0°F (1936) | 21.0°F (1995) | 1.36 in (2006) |
| September 23 | 95.0°F (1958) | 25.0°F (1965) | 1.97 in (1977) |
| September 24 | 90.0°F (1917) | 21.9°F (1965) | 0.56 in (1981) |
| September 25 | 91.0°F (1938) | 14.0°F (1926) | 1.62 in (1923) |
| September 26 | 98.1°F (2024) | 14.0°F (1934) | 0.60 in (1929) |
| September 27 | 96.1°F (1952) | 23.0°F (1927) | 0.50 in (1982) |
| September 28 | 95.0°F (2021) | 21.9°F (1951) | 0.59 in (1982) |
| September 29 | 97.0°F (2024) | 23.0°F (1920) | 1.44 in (1923) |
| September 30 | 95.0°F (2024) | 19.0°F (1985) | 0.74 in (2014) |