September weather in Northwood, IA
The average temperature in Northwood in September is 59.3°F (47.9°F–70.8°F). Average precipitation: 3.32 inches.
September is a fall month in Northwood, and is warmer than the annual average of 43°F. Daily temperatures swing about 22.9°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
70.8°F
Avg Low
47.9°F
Precipitation
3.32 in
Daylight
12h 17m
September records in Northwood
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 95.0°F (1913) | 35.1°F (1949) | 2.40 in (1897) |
| September 2 | 95.0°F (1925) | 39.0°F (1946) | 1.58 in (1970) |
| September 3 | 93.9°F (2023) | 35.1°F (1952) | 1.71 in (2006) |
| September 4 | 96.1°F (2023) | 37.9°F (1974) | 2.44 in (2018) |
| September 5 | 95.0°F (1913) | 37.9°F (1962) | 5.74 in (1946) |
| September 6 | 98.1°F (1922) | 37.9°F (1956) | 6.53 in (1927) |
| September 7 | 97.0°F (1939) | 39.0°F (1956) | 2.00 in (1917) |
| September 8 | 98.1°F (1931) | 37.0°F (1995) | 3.25 in (1918) |
| September 9 | 95.0°F (1955) | 36.0°F (1910) | 1.94 in (1901) |
| September 10 | 98.1°F (1931) | 33.1°F (1917) | 1.45 in (1920) |
| September 11 | 93.9°F (1931) | 34.0°F (1917) | 1.88 in (1900) |
| September 12 | 91.9°F (1931) | 35.1°F (1902) | 2.70 in (1991) |
| September 13 | 93.9°F (1939) | 32.0°F (1953) | 3.70 in (1978) |
| September 14 | 96.1°F (1939) | 34.0°F (1923) | 2.10 in (1928) |
| September 15 | 96.1°F (1939) | 30.0°F (2007) | 5.24 in (2004) |
| September 16 | 93.9°F (1931) | 28.9°F (2014) | 3.05 in (1906) |
| September 17 | 93.0°F (1955) | 33.1°F (1916) | 1.20 in (1923) |
| September 18 | 91.9°F (1955) | 28.0°F (1929) | 2.91 in (1926) |
| September 19 | 93.0°F (1984) | 32.0°F (1896) | 3.45 in (1983) |
| September 20 | 90.0°F (1940) | 30.0°F (1897) | 1.92 in (2018) |
| September 21 | 91.0°F (1937) | 28.9°F (1918) | 2.07 in (1968) |
| September 22 | 90.0°F (1937) | 26.1°F (1913) | 4.13 in (2016) |
| September 23 | 89.1°F (1938) | 28.0°F (1989) | 2.73 in (2010) |
| September 24 | 88.0°F (2017) | 28.0°F (1989) | 2.45 in (2023) |
| September 25 | 88.0°F (1956) | 27.0°F (1942) | 2.46 in (2005) |
| September 26 | 89.1°F (1986) | 27.0°F (1926) | 1.85 in (1910) |
| September 27 | 87.1°F (1998) | 28.9°F (1942) | 1.60 in (1924) |
| September 28 | 88.0°F (1898) | 24.1°F (1942) | 2.44 in (1901) |
| September 29 | 88.0°F (1897) | 26.1°F (1908) | 3.03 in (1923) |
| September 30 | 89.1°F (1897) | 19.9°F (1899) | 2.58 in (1982) |