Weather on September 20
Davenport, IA
55 Years of Data
Avg High
76°F
Avg Low
56°F
Warmest
2022
82°F avg
Coldest
1991
49°F avg
About This Date
September 20th in Davenport, IA typically brings pleasant fall weather, with average highs around 76°F and lows near 56°F. Over 55 years of records, the warmest September 20th was in 2022 (82°F average), while the coldest was 1991 (49°F) — a 33°F range across recorded history. Rain or other precipitation has occurred on about 38% of September 20th dates historically, with the wettest September 20th recording 6.32" of rain. The last decade has been 9.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 9.6°F warmer on this date compared to 20-30 years ago.
Planning for September 20th in Davenport, IA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
2.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 62° | 71° | — | — |
| 2024 | 92° | 68° | 80° | — | — |
| 2023 | 79° | 65° | 72° | 0.2" | — |
| 2022warmest | 95° | 69° | 82° | — | — |
| 2021 | 86° | 62° | 74° | 2.21" | — |
| 2020 | 73° | 49° | 61° | — | — |
| 2019 | 89° | 59° | 74° | — | — |
| 2018 | 93° | 65° | 79° | — | — |
| 2017 | 93° | 61° | 77° | 6.32" | — |
| 2016 | 86° | 64° | 75° | — | — |
| 2015 | 75° | 52° | 63° | — | — |
| 2014 | 76° | 63° | 69° | 0.05" | — |
| 2013 | 67° | 59° | 63° | 0.1" | — |
| 2012 | 70° | 54° | 62° | — | — |
| 2011 | 80° | 56° | 68° | — | — |
| 2010 | 89° | 59° | 74° | 0.1" | — |
| 2009 | 77° | 59° | 68° | — | — |
| 2008 | 81° | 62° | 71° | — | — |
| 2007 | 87° | 60° | 74° | — | — |
| 2006 | 67° | 42° | 54° | — | — |
| 2005 | 89° | 57° | 73° | — | — |
| 2004 | 81° | 57° | 69° | — | — |
| 2003 | 74° | 47° | 60° | — | — |
| 2002 | 72° | 64° | 68° | 0.15" | — |
| 2001 | 76° | 57° | 66° | 0.13" | — |
| 2000 | 54° | 51° | 52° | 0.51" | — |
| 1999 | 78° | 49° | 63° | 0.03" | — |
| 1998 | 81° | 71° | 76° | — | — |
| 1997 | 67° | 55° | 61° | 0.53" | — |
| 1996 | 70° | 53° | 61° | 0.13" | — |
| 1995 | 56° | 47° | 51° | 1.24" | — |
| 1994 | 86° | 63° | 74° | — | — |
| 1993 | 70° | 60° | 65° | 0.13" | — |
| 1992 | 63° | 51° | 57° | — | — |
| 1991coldest | 60° | 38° | 49° | — | — |
| 1990 | 71° | 52° | 61° | — | — |
| 1989 | 80° | 57° | 69° | — | — |
| 1988 | 70° | 56° | 63° | 0.08" | — |
| 1987 | 63° | 50° | 56° | — | — |
| 1986 | 77° | 60° | 69° | 0.08" | — |
| 1985 | 76° | 56° | 66° | — | — |
| 1984 | 85° | 58° | 71° | — | — |
| 1983 | 77° | 45° | 61° | 0.46" | — |
| 1982 | 58° | 45° | 51° | — | — |
| 1981 | 79° | 52° | 65° | — | — |
| 1980 | 89° | 65° | 77° | 0.2" | — |
| 1979 | 80° | 50° | 65° | — | — |
| 1978 | 78° | 56° | 67° | 0.33" | — |
| 1977 | 70° | 55° | 62° | — | — |
| 1976 | 67° | 53° | 60° | 0.08" | — |
| 1975 | 60° | 49° | 54° | — | — |
| 1974 | 65° | 57° | 61° | — | — |
| 1973 | 64° | 50° | 57° | 0.03" | — |
| 1972 | 88° | 67° | 77° | — | — |
| 1971 | 70° | 46° | 58° | — | — |
55 years of data from DAVENPORT L&D 15