September weather in Oelwein, IA
The average temperature in Oelwein in September is 62.6°F (51.4°F–73.8°F). Average precipitation: inches.
September is a fall month in Oelwein, and is warmer than the annual average of 46.3°F. Daily temperatures swing about 22.4°F between overnight low and afternoon high. Daylight averages about 12h 16m. For travel, September is one of the best months of the year to visit.
Avg High
73.8°F
Avg Low
51.4°F
Precipitation
in
Daylight
12h 16m
September records in Oelwein
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 96.1°F (1937) | 37.0°F (1955) | 2.55 in (1923) |
| September 2 | 97.0°F (1925) | 37.9°F (1946) | 0.90 in (1942) |
| September 3 | 102.0°F (1939) | 34.0°F (1974) | 1.45 in (1934) |
| September 4 | 97.0°F (1925) | 33.1°F (1974) | 1.50 in (1994) |
| September 5 | 93.9°F (1931) | 19.9°F (1942) | 2.30 in (1956) |
| September 6 | 100.0°F (1939) | 37.0°F (1988) | 1.18 in (1946) |
| September 7 | 102.9°F (1939) | 35.1°F (1956) | 7.19 in (1989) |
| September 8 | 98.1°F (1933) | 37.0°F (1986) | 4.25 in (1941) |
| September 9 | 99.0°F (1955) | 37.0°F (1924) | 1.80 in (1929) |
| September 10 | 97.0°F (1931) | 37.9°F (1943) | 1.40 in (1928) |
| September 11 | 93.9°F (1931) | 28.0°F (1955) | 1.25 in (1936) |
| September 12 | 95.0°F (1927) | 30.0°F (1955) | 1.97 in (1961) |
| September 13 | 93.9°F (1927) | 28.0°F (1953) | 2.15 in (1961) |
| September 14 | 93.9°F (1927) | 33.1°F (1923) | 1.50 in (1991) |
| September 15 | 99.0°F (1939) | 37.9°F (1979) | 1.20 in (1934) |
| September 16 | 95.0°F (1931) | 30.9°F (1937) | 2.20 in (1941) |
| September 17 | 93.9°F (1925) | 33.1°F (1943) | 0.80 in (1938) |
| September 18 | 93.0°F (1955) | 30.0°F (1929) | 1.84 in (1960) |
| September 19 | 93.9°F (1948) | 32.0°F (1991) | 3.05 in (1931) |
| September 20 | 90.0°F (1931) | 28.0°F (1956) | 1.83 in (1980) |
| September 21 | 89.1°F (1935) | 30.9°F (1952) | 2.40 in (1950) |
| September 22 | 91.0°F (1936) | 25.0°F (1974) | 2.00 in (1946) |
| September 23 | 88.0°F (1933) | 28.9°F (1983) | 1.04 in (1985) |
| September 24 | 90.0°F (1935) | 28.0°F (1976) | 1.50 in (1937) |
| September 25 | 84.9°F (1986) | 26.1°F (1942) | 3.22 in (1981) |
| September 26 | 87.1°F (1986) | 24.1°F (1942) | 1.45 in (1981) |
| September 27 | 88.0°F (1954) | 28.0°F (1942) | 1.32 in (1959) |
| September 28 | 90.0°F (1939) | 21.9°F (1942) | 1.04 in (1974) |
| September 29 | 91.0°F (1953) | 25.0°F (1967) | 1.12 in (1985) |
| September 30 | 87.1°F (1952) | 27.0°F (1972) | 3.35 in (1961) |