Weather on September 21
Davenport, IA
55 Years of Data
Avg High
74°F
Avg Low
54°F
Warmest
2005
80°F avg
Coldest
1995
47°F avg
About This Date
September 21st in Davenport, IA typically brings pleasant fall weather, with average highs around 74°F and lows near 54°F. Over 55 years of records, the warmest September 21st was in 2005 (80°F average), while the coldest was 1995 (47°F) — a 33°F range across recorded history. Rain or other precipitation has occurred on about 33% of September 21st dates historically, with the wettest September 21st recording 3.68" of rain. The last decade has been 5.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.7°F warmer on this date compared to 20-30 years ago.
Planning for September 21st in Davenport, IA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
2.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 79° | 64° | 71° | — | — |
| 2024 | 87° | 55° | 71° | — | — |
| 2023 | 69° | 65° | 67° | 0.08" | — |
| 2022 | 82° | 60° | 71° | — | — |
| 2021 | 70° | 58° | 64° | — | — |
| 2020 | 77° | 53° | 65° | — | — |
| 2019 | 78° | 70° | 74° | 1.75" | — |
| 2018 | 82° | 55° | 69° | 0.03" | — |
| 2017 | 86° | 67° | 76° | 3.68" | — |
| 2016 | 83° | 71° | 77° | — | — |
| 2015 | 75° | 52° | 63° | — | — |
| 2014 | 70° | 56° | 63° | — | — |
| 2013 | 70° | 49° | 59° | — | — |
| 2012 | 61° | 50° | 55° | 0.36" | — |
| 2011 | 80° | 51° | 66° | — | — |
| 2010 | 87° | 69° | 78° | 0.2" | — |
| 2009 | 70° | 60° | 65° | 1.52" | — |
| 2008 | 80° | 60° | 70° | — | — |
| 2007 | 89° | 68° | 79° | — | — |
| 2006 | 70° | 52° | 61° | — | — |
| 2005warmest | 90° | 71° | 80° | — | — |
| 2004 | 84° | 62° | 73° | — | — |
| 2003 | 73° | 49° | 61° | — | — |
| 2002 | 78° | 58° | 68° | — | — |
| 2001 | 73° | 58° | 65° | 0.15" | — |
| 2000 | 69° | 46° | 58° | 1.88" | — |
| 1999 | 67° | 43° | 55° | — | — |
| 1998 | 71° | 58° | 64° | — | — |
| 1997 | 68° | 50° | 59° | — | — |
| 1996 | 74° | 56° | 65° | 0.03" | — |
| 1995coldest | 57° | 37° | 47° | 0.15" | — |
| 1994 | 85° | 46° | 65° | — | — |
| 1993 | 70° | 60° | 65° | — | — |
| 1992 | 65° | 60° | 62° | 0.36" | — |
| 1991 | 69° | 41° | 55° | — | — |
| 1990 | 72° | 46° | 59° | 1.19" | — |
| 1989 | 78° | 57° | 68° | — | — |
| 1988 | 74° | 50° | 62° | — | — |
| 1987 | 63° | 49° | 56° | 0.1" | — |
| 1986 | 89° | 62° | 76° | — | — |
| 1985 | 64° | 52° | 58° | 0.2" | — |
| 1984 | 86° | 53° | 70° | — | — |
| 1983 | 56° | 40° | 48° | 1.14" | — |
| 1982 | 60° | 42° | 51° | — | — |
| 1981 | 80° | 56° | 68° | — | — |
| 1980 | 81° | 63° | 72° | — | — |
| 1979 | 69° | 51° | 60° | — | — |
| 1978 | 68° | 53° | 61° | 0.18" | — |
| 1977 | 73° | 50° | 62° | — | — |
| 1976 | 64° | 48° | 56° | — | — |
| 1975 | 57° | 48° | 53° | — | — |
| 1974 | 68° | 43° | 55° | — | — |
| 1973 | 76° | 50° | 63° | — | — |
| 1972 | 70° | 53° | 61° | 1.52" | — |
| 1971 | 74° | 48° | 61° | — | — |
55 years of data from DAVENPORT L&D 15