September weather in Linn Grove, IA
The average temperature in Linn Grove in September is 62.4°F (51.1°F–73.6°F). Average precipitation: 3.39 inches.
September is a fall month in Linn Grove, and is warmer than the annual average of 46.4°F. Daily temperatures swing about 22.5°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 16m. For travel, September is one of the best months of the year to visit.
Avg High
73.6°F
Avg Low
51.1°F
Precipitation
3.39 in
Daylight
12h 16m
September records in Linn Grove
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 93.9°F (1953) | 34.0°F (1949) | 0.62 in (1959) |
| September 2 | 95.0°F (1947) | 41.0°F (1946) | 1.10 in (1942) |
| September 3 | 97.0°F (2023) | 30.9°F (1974) | 1.64 in (2021) |
| September 4 | 95.0°F (2023) | 36.0°F (1974) | 4.23 in (2018) |
| September 5 | 96.1°F (2023) | 35.1°F (1962) | 1.91 in (1983) |
| September 6 | 100.9°F (1970) | 37.9°F (1956) | 2.52 in (1965) |
| September 7 | 98.1°F (1976) | 33.1°F (1956) | 2.33 in (2016) |
| September 8 | 100.9°F (1947) | 36.0°F (1992) | 2.81 in (1964) |
| September 9 | 99.0°F (1947) | 37.0°F (1995) | 1.03 in (2015) |
| September 10 | 91.0°F (1983) | 37.0°F (1948) | 1.15 in (1961) |
| September 11 | 93.0°F (1948) | 33.1°F (1955) | 2.01 in (2019) |
| September 12 | 93.0°F (1948) | 32.0°F (1955) | 3.17 in (1951) |
| September 13 | 91.9°F (1955) | 34.0°F (1974) | 2.08 in (1978) |
| September 14 | 95.0°F (2025) | 30.9°F (1949) | 5.26 in (2004) |
| September 15 | 100.0°F (1955) | 28.9°F (1993) | 3.12 in (2016) |
| September 16 | 97.0°F (1955) | 34.0°F (1966) | 1.16 in (1987) |
| September 17 | 97.0°F (1955) | 30.0°F (1943) | 1.09 in (1968) |
| September 18 | 95.0°F (1947) | 34.0°F (1973) | 1.62 in (1942) |
| September 19 | 97.0°F (1948) | 28.0°F (1991) | 1.94 in (1995) |
| September 20 | 91.0°F (1970) | 30.0°F (1942) | 4.61 in (2018) |
| September 21 | 97.0°F (2022) | 27.0°F (1999) | 2.33 in (1994) |
| September 22 | 91.9°F (2017) | 27.0°F (1995) | 1.22 in (1997) |
| September 23 | 93.9°F (1947) | 26.1°F (1989) | 2.56 in (1968) |
| September 24 | 87.1°F (2017) | 26.1°F (1942) | 0.92 in (2005) |
| September 25 | 91.0°F (1956) | 26.1°F (1947) | 2.21 in (2005) |
| September 26 | 93.9°F (1956) | 28.0°F (1942) | 1.29 in (1973) |
| September 27 | 95.0°F (1956) | 24.1°F (1942) | 1.24 in (1965) |
| September 28 | 89.1°F (1956) | 18.0°F (1942) | 1.61 in (1988) |
| September 29 | 87.1°F (2021) | 23.0°F (1945) | 0.95 in (2008) |
| September 30 | 91.0°F (2023) | 26.1°F (1956) | 1.69 in (2007) |