September weather in Spirit Lake, IA
The average temperature in Spirit Lake in September is 62.6°F (52.1°F–73.1°F). Average precipitation: 3.03 inches.
September is a fall month in Spirit Lake, and is warmer than the annual average of 45.7°F. Daily temperatures swing about 21°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 17m. For travel, September is one of the best months of the year to visit.
Avg High
73.1°F
Avg Low
52.1°F
Precipitation
3.03 in
Daylight
12h 17m
September records in Spirit Lake
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 96.1°F (1894) | 48.9°F (2003) | 0.40 in (1904) |
| September 2 | 98.1°F (1897) | 46.9°F (2024) | 0.93 in (2008) |
| September 3 | 95.0°F (1897) | 45.0°F (2008) | 1.65 in (2021) |
| September 4 | 95.0°F (1897) | 42.1°F (2025) | 0.48 in (2016) |
| September 5 | 98.1°F (1897) | 41.0°F (1896) | 2.22 in (2018) |
| September 6 | 98.1°F (1899) | 41.0°F (2025) | 0.62 in (1943) |
| September 7 | 100.0°F (1893) | 37.9°F (1898) | 1.09 in (1901) |
| September 8 | 95.0°F (1893) | 39.0°F (1895) | 1.64 in (2005) |
| September 9 | 95.0°F (1893) | 37.9°F (1898) | 2.20 in (1901) |
| September 10 | 96.1°F (1893) | 39.9°F (1898) | 0.91 in (2010) |
| September 11 | 98.1°F (1895) | 35.1°F (1894) | 5.98 in (1900) |
| September 12 | 98.1°F (1895) | 39.9°F (2007) | 0.86 in (2019) |
| September 13 | 100.0°F (1897) | 34.0°F (2014) | 0.48 in (2004) |
| September 14 | 90.0°F (1897) | 39.9°F (2007) | 3.64 in (2004) |
| September 15 | 88.0°F (2022) | 36.0°F (2007) | 3.97 in (2004) |
| September 16 | 87.1°F (1893) | 37.9°F (1900) | 3.64 in (2016) |
| September 17 | 90.0°F (1895) | 32.0°F (1901) | 0.40 in (2005) |
| September 18 | 100.9°F (1895) | 35.1°F (1901) | 1.64 in (2002) |
| September 19 | 93.9°F (1895) | 28.0°F (1896) | 1.12 in (2018) |
| September 20 | 93.9°F (1895) | 34.0°F (1896) | 3.85 in (2018) |
| September 21 | 98.1°F (2022) | 35.1°F (2012) | 1.59 in (2004) |
| September 22 | 90.0°F (2016) | 30.9°F (1896) | 2.12 in (1895) |
| September 23 | 91.9°F (2017) | 37.9°F (1894) | 1.60 in (1895) |
| September 24 | 91.0°F (1897) | 30.9°F (1894) | 0.72 in (2005) |
| September 25 | 93.9°F (1897) | 32.0°F (2000) | 3.36 in (2005) |
| September 26 | 89.1°F (1894) | 34.0°F (1899) | 2.00 in (1901) |
| September 27 | 91.9°F (1894) | 30.9°F (1896) | 0.67 in (1901) |
| September 28 | 93.9°F (1897) | 32.0°F (1895) | 0.95 in (1954) |
| September 29 | 93.0°F (1897) | 21.0°F (1899) | 0.78 in (2007) |
| September 30 | 93.0°F (1897) | 27.0°F (1899) | 0.22 in (2007) |