September weather in Larchwood, IA
The average temperature in Larchwood in September is 62.0°F (50.3°F–73.6°F). Average precipitation: 2.90 inches.
September is a fall month in Larchwood, and is warmer than the annual average of 45.7°F. Daily temperatures swing about 23.3°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 17m. For travel, September is one of the best months of the year to visit.
Avg High
73.6°F
Avg Low
50.3°F
Precipitation
2.90 in
Daylight
12h 17m
September records in Larchwood
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.0°F (1970) | 34.0°F (1949) | 1.34 in (1992) |
| September 2 | 100.9°F (1947) | 37.0°F (1924) | 2.36 in (1933) |
| September 3 | 100.0°F (2023) | 32.0°F (1974) | 1.45 in (1973) |
| September 4 | 102.9°F (1925) | 33.1°F (1902) | 2.63 in (1949) |
| September 5 | 100.9°F (1913) | 32.0°F (1909) | 1.30 in (1985) |
| September 6 | 104.0°F (1976) | 33.1°F (1956) | 1.33 in (1957) |
| September 7 | 102.9°F (1931) | 33.1°F (1898) | 1.94 in (1989) |
| September 8 | 102.0°F (1947) | 35.1°F (1992) | 2.20 in (1926) |
| September 9 | 100.9°F (1931) | 30.0°F (1910) | 3.10 in (1946) |
| September 10 | 102.0°F (1931) | 32.0°F (1917) | 1.17 in (1982) |
| September 11 | 97.0°F (1939) | 28.0°F (1955) | 3.20 in (2019) |
| September 12 | 99.0°F (1948) | 23.0°F (1902) | 1.89 in (1979) |
| September 13 | 100.9°F (1939) | 25.0°F (1902) | 2.41 in (1938) |
| September 14 | 100.9°F (1939) | 33.1°F (1949) | 1.47 in (1986) |
| September 15 | 100.9°F (1955) | 23.0°F (1916) | 1.65 in (1988) |
| September 16 | 99.0°F (1955) | 27.0°F (1937) | 4.10 in (2016) |
| September 17 | 100.0°F (1955) | 21.9°F (1916) | 0.81 in (1907) |
| September 18 | 96.1°F (1947) | 23.0°F (1902) | 2.93 in (1926) |
| September 19 | 99.0°F (1925) | 21.9°F (1991) | 1.93 in (1931) |
| September 20 | 93.9°F (1940) | 21.9°F (1918) | 4.71 in (2018) |
| September 21 | 99.0°F (1937) | 21.9°F (1934) | 1.63 in (1950) |
| September 22 | 93.9°F (1936) | 18.0°F (1913) | 1.40 in (1959) |
| September 23 | 95.0°F (1935) | 23.0°F (1989) | 2.41 in (2010) |
| September 24 | 91.0°F (1935) | 26.1°F (1942) | 1.67 in (1910) |
| September 25 | 95.0°F (1956) | 24.1°F (1926) | 1.00 in (1929) |
| September 26 | 97.0°F (1956) | 21.0°F (1984) | 2.61 in (1929) |
| September 27 | 98.1°F (1956) | 21.9°F (1935) | 0.85 in (1965) |
| September 28 | 93.0°F (1897) | 15.1°F (1899) | 1.48 in (1988) |
| September 29 | 93.0°F (1897) | 18.0°F (1916) | 2.00 in (1973) |
| September 30 | 93.0°F (1952) | 21.9°F (1974) | 1.10 in (1965) |