September weather in Readlyn, IA
The average temperature in Readlyn in September is 62.4°F (50.3°F–74.5°F). Average precipitation: 3.75 inches.
September is a fall month in Readlyn, and is warmer than the annual average of 46.4°F. Daily temperatures swing about 24.2°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 16m. For travel, September is one of the best months of the year to visit.
Avg High
74.5°F
Avg Low
50.3°F
Precipitation
3.75 in
Daylight
12h 16m
September records in Readlyn
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 95.0°F (1953) | 36.0°F (1949) | 2.50 in (1948) |
| September 2 | 97.0°F (1984) | 37.9°F (1946) | 2.00 in (1961) |
| September 3 | 91.9°F (1947) | 37.0°F (1974) | 2.05 in (2018) |
| September 4 | 93.0°F (1947) | 37.0°F (1974) | 1.26 in (1968) |
| September 5 | 96.1°F (2012) | 39.9°F (1962) | 2.86 in (1985) |
| September 6 | 91.9°F (1990) | 37.9°F (1988) | 1.63 in (2020) |
| September 7 | 95.0°F (1978) | 37.0°F (1956) | 0.90 in (1972) |
| September 8 | 95.0°F (1978) | 36.0°F (1986) | 3.10 in (2001) |
| September 9 | 98.1°F (1955) | 37.0°F (1986) | 1.45 in (1951) |
| September 10 | 96.1°F (2013) | 37.9°F (1976) | 2.32 in (2016) |
| September 11 | 93.9°F (2013) | 36.0°F (1955) | 4.90 in (2006) |
| September 12 | 95.0°F (2000) | 35.1°F (1955) | 2.18 in (2019) |
| September 13 | 91.9°F (1998) | 33.1°F (2014) | 1.88 in (1978) |
| September 14 | 91.0°F (1998) | 33.1°F (1996) | 0.97 in (1993) |
| September 15 | 91.9°F (1955) | 30.9°F (2007) | 1.75 in (1970) |
| September 16 | 91.0°F (1955) | 30.9°F (2007) | 1.50 in (2016) |
| September 17 | 91.0°F (1955) | 33.1°F (1984) | 0.91 in (1997) |
| September 18 | 93.9°F (1988) | 36.0°F (1973) | 1.90 in (1977) |
| September 19 | 93.0°F (1948) | 32.0°F (1991) | 1.45 in (1978) |
| September 20 | 90.0°F (1984) | 28.9°F (1991) | 3.32 in (2018) |
| September 21 | 91.0°F (2018) | 30.0°F (1991) | 1.40 in (1965) |
| September 22 | 91.9°F (2017) | 27.0°F (1974) | 2.30 in (2016) |
| September 23 | 93.0°F (2017) | 28.9°F (2012) | 4.61 in (2016) |
| September 24 | 93.0°F (2017) | 28.9°F (2012) | 0.94 in (1998) |
| September 25 | 91.0°F (2017) | 33.1°F (1989) | 1.78 in (1986) |
| September 26 | 87.1°F (2017) | 27.0°F (1984) | 1.47 in (1972) |
| September 27 | 88.0°F (1954) | 27.0°F (1984) | 0.99 in (2011) |
| September 28 | 89.1°F (1952) | 28.9°F (1961) | 0.95 in (1974) |
| September 29 | 89.1°F (1953) | 25.0°F (1949) | 1.83 in (2015) |
| September 30 | 91.0°F (1952) | 27.0°F (1984) | 2.05 in (1961) |