September weather in McGregor, IA
The average temperature in McGregor in September is 63.1°F (52.0°F–74.2°F). Average precipitation: 3.99 inches.
September is a fall month in McGregor, and is warmer than the annual average of 47.7°F. Daily temperatures swing about 22.2°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 17m. For travel, September is one of the best months of the year to visit.
Avg High
74.2°F
Avg Low
52.0°F
Precipitation
3.99 in
Daylight
12h 17m
September records in McGregor
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.0°F (1913) | 34.0°F (1895) | 3.15 in (2010) |
| September 2 | 100.0°F (1913) | 36.0°F (1896) | 1.53 in (1961) |
| September 3 | 98.1°F (1894) | 37.9°F (1893) | 1.70 in (2019) |
| September 4 | 98.1°F (1925) | 37.0°F (1896) | 3.00 in (2018) |
| September 5 | 96.1°F (2023) | 39.0°F (1896) | 2.20 in (2012) |
| September 6 | 100.9°F (1922) | 37.0°F (1896) | 2.54 in (1983) |
| September 7 | 104.0°F (1939) | 36.0°F (1896) | 2.20 in (1938) |
| September 8 | 100.0°F (1933) | 36.0°F (1896) | 1.80 in (1946) |
| September 9 | 99.0°F (1955) | 37.9°F (1924) | 3.86 in (1929) |
| September 10 | 98.1°F (1895) | 35.1°F (1967) | 3.54 in (1919) |
| September 11 | 100.0°F (1895) | 33.1°F (1894) | 1.65 in (2006) |
| September 12 | 100.0°F (1927) | 33.1°F (1955) | 3.37 in (1991) |
| September 13 | 100.0°F (1927) | 32.0°F (1902) | 3.05 in (1961) |
| September 14 | 100.0°F (1939) | 33.1°F (1923) | 2.48 in (1938) |
| September 15 | 100.9°F (1939) | 27.0°F (2011) | 1.72 in (1914) |
| September 16 | 97.0°F (1900) | 27.0°F (2011) | 2.25 in (1897) |
| September 17 | 95.0°F (1927) | 32.0°F (1893) | 0.94 in (1921) |
| September 18 | 95.0°F (1955) | 30.0°F (1929) | 4.25 in (1907) |
| September 19 | 96.1°F (1895) | 32.0°F (1896) | 1.87 in (1905) |
| September 20 | 95.0°F (1908) | 23.0°F (1896) | 3.10 in (2018) |
| September 21 | 93.0°F (1908) | 32.0°F (1896) | 1.75 in (1986) |
| September 22 | 90.0°F (1895) | 26.1°F (1896) | 2.52 in (2016) |
| September 23 | 89.1°F (1933) | 25.0°F (1896) | 2.41 in (1946) |
| September 24 | 93.0°F (2017) | 28.0°F (1976) | 2.06 in (1910) |
| September 25 | 91.9°F (2017) | 24.1°F (1894) | 2.05 in (1931) |
| September 26 | 88.0°F (1908) | 23.0°F (1893) | 1.86 in (1930) |
| September 27 | 90.0°F (1894) | 23.0°F (1893) | 2.57 in (1908) |
| September 28 | 91.9°F (1904) | 19.9°F (1893) | 0.64 in (1907) |
| September 29 | 90.0°F (1897) | 27.0°F (1949) | 1.18 in (1904) |
| September 30 | 89.1°F (1897) | 21.9°F (1899) | 2.00 in (1961) |