September weather in Lead, SD
The average temperature in Lead in September is 59.6°F (47.0°F–72.2°F). Average precipitation: 1.96 inches. Average snowfall is 1.8 inches.
September is a fall month in Lead, and is warmer than the annual average of 46.3°F. Daily temperatures swing about 25.2°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 17m. For travel, September is a comfortable month to visit.
Avg High
72.2°F
Avg Low
47.0°F
Precipitation
1.96 in
Snow
1.8 in
September records in Lead
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 91.9°F (1929) | 34.0°F (1930) | 0.97 in (1963) |
| September 2 | 91.9°F (1960) | 33.1°F (1974) | 1.38 in (1919) |
| September 3 | 93.9°F (2014) | 32.0°F (1928) | 0.75 in (1968) |
| September 4 | 93.9°F (1960) | 28.9°F (1962) | 1.50 in (1910) |
| September 5 | 95.0°F (2022) | 28.9°F (1920) | 3.39 in (1971) |
| September 6 | 96.1°F (1978) | 28.0°F (1929) | 0.65 in (1996) |
| September 7 | 91.0°F (1978) | 28.9°F (1929) | 0.88 in (1946) |
| September 8 | 96.1°F (2022) | 26.1°F (1922) | 1.44 in (1938) |
| September 9 | 90.0°F (1998) | 23.0°F (2020) | 1.56 in (2002) |
| September 10 | 90.0°F (1952) | 28.0°F (1989) | 1.70 in (2003) |
| September 11 | 91.0°F (2021) | 23.0°F (1989) | 0.87 in (1942) |
| September 12 | 89.1°F (1959) | 24.1°F (1949) | 1.71 in (1945) |
| September 13 | 88.0°F (1959) | 23.0°F (1970) | 2.32 in (1966) |
| September 14 | 91.0°F (1948) | 25.0°F (1993) | 1.92 in (1928) |
| September 15 | 91.9°F (1948) | 26.1°F (1934) | 1.90 in (1967) |
| September 16 | 88.0°F (1985) | 21.9°F (1965) | 2.35 in (1913) |
| September 17 | 89.1°F (2000) | 23.0°F (1965) | 1.34 in (1923) |
| September 18 | 91.0°F (2014) | 24.1°F (1965) | 3.05 in (2002) |
| September 19 | 89.1°F (1914) | 23.0°F (1957) | 0.61 in (1995) |
| September 20 | 88.0°F (1956) | 21.0°F (1983) | 1.65 in (1955) |
| September 21 | 86.0°F (1922) | 18.0°F (1995) | 0.59 in (1989) |
| September 22 | 86.0°F (1922) | 21.9°F (1995) | 2.87 in (2006) |
| September 23 | 84.9°F (1992) | 21.0°F (1965) | 2.00 in (2006) |
| September 24 | 88.0°F (1938) | 12.0°F (1926) | 0.80 in (1918) |
| September 25 | 86.0°F (2020) | 14.0°F (1926) | 1.15 in (1918) |
| September 26 | 89.1°F (2015) | 12.0°F (1934) | 1.15 in (1936) |
| September 27 | 88.0°F (2024) | 19.9°F (1951) | 0.35 in (2006) |
| September 28 | 86.0°F (2001) | 17.1°F (1985) | 2.19 in (1923) |
| September 29 | 86.0°F (1918) | 19.0°F (1912) | 1.46 in (1927) |
| September 30 | 89.1°F (2024) | 15.1°F (1985) | 2.83 in (1962) |