September weather in Naples, SD
The average temperature in Naples in September is 60.4°F (48.9°F–71.8°F). Average precipitation: 2.70 inches.
September is a fall month in Naples, and is warmer than the annual average of 43.1°F. Daily temperatures swing about 22.9°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 18m. For travel, September is a comfortable month to visit.
Avg High
71.8°F
Avg Low
48.9°F
Precipitation
2.70 in
Daylight
12h 18m
September records in Naples
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 99.0°F (1913) | 35.1°F (1946) | 1.77 in (1904) |
| September 2 | 100.9°F (1929) | 37.9°F (1917) | 3.38 in (1926) |
| September 3 | 102.0°F (1925) | 35.1°F (1946) | 1.48 in (1985) |
| September 4 | 100.0°F (1925) | 32.0°F (1902) | 2.25 in (1894) |
| September 5 | 100.9°F (1933) | 34.0°F (1909) | 0.54 in (2004) |
| September 6 | 100.0°F (1976) | 34.0°F (1934) | 2.00 in (1948) |
| September 7 | 100.0°F (1976) | 37.0°F (1955) | 2.02 in (1930) |
| September 8 | 98.1°F (1908) | 36.0°F (1907) | 4.70 in (1900) |
| September 9 | 104.0°F (1931) | 28.0°F (1910) | 1.14 in (1925) |
| September 10 | 104.0°F (1931) | 30.0°F (1943) | 1.48 in (1933) |
| September 11 | 96.1°F (1931) | 32.0°F (1896) | 3.59 in (1901) |
| September 12 | 96.1°F (1939) | 28.9°F (1902) | 2.48 in (1914) |
| September 13 | 99.0°F (1939) | 28.9°F (1903) | 0.87 in (1921) |
| September 14 | 98.1°F (1939) | 27.0°F (1949) | 2.04 in (1941) |
| September 15 | 99.0°F (1955) | 25.0°F (1916) | 1.89 in (2001) |
| September 16 | 93.0°F (1925) | 24.1°F (1903) | 1.61 in (1921) |
| September 17 | 95.0°F (1955) | 28.9°F (1903) | 1.83 in (1986) |
| September 18 | 93.9°F (1920) | 19.9°F (1929) | 1.14 in (1908) |
| September 19 | 93.0°F (1894) | 24.1°F (1896) | 1.33 in (1988) |
| September 20 | 91.0°F (1908) | 24.1°F (1918) | 2.13 in (1988) |
| September 21 | 93.9°F (1936) | 21.0°F (1934) | 1.32 in (1950) |
| September 22 | 100.0°F (1936) | 21.9°F (1913) | 0.81 in (2009) |
| September 23 | 96.1°F (1935) | 25.0°F (1928) | 0.88 in (2004) |
| September 24 | 91.9°F (1935) | 21.9°F (1942) | 1.97 in (1901) |
| September 25 | 89.1°F (1938) | 15.1°F (1926) | 1.04 in (1910) |
| September 26 | 93.0°F (1974) | 21.0°F (1965) | 1.06 in (1996) |
| September 27 | 96.1°F (1894) | 19.9°F (1912) | 0.43 in (1915) |
| September 28 | 89.1°F (1894) | 19.0°F (1951) | 0.95 in (1894) |
| September 29 | 88.0°F (2011) | 21.9°F (1939) | 0.85 in (1965) |
| September 30 | 86.0°F (1952) | 19.9°F (1907) | 1.50 in (1950) |