Weather on September 17
Milwaukee, WI
55 Years of Data
Avg High
74°F
Avg Low
55°F
Warmest
2018
79°F avg
Coldest
1981
51°F avg
About This Date
September 17th in Milwaukee, WI typically brings pleasant fall weather, with average highs around 74°F and lows near 55°F. Over 55 years of records, the warmest September 17th was in 2018 (79°F average), while the coldest was 1981 (51°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 35% of September 17th dates historically, with the wettest September 17th recording 3.25" of rain. The last decade has been 8.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 8.3°F warmer on this date compared to 20-30 years ago.
Planning for September 17th in Milwaukee, WI? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
1.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 84° | 58° | 71° | — | — |
| 2024 | 89° | 56° | 72° | — | — |
| 2023 | 77° | 58° | 67° | 1.7" | — |
| 2022 | 85° | 68° | 76° | — | — |
| 2021 | 89° | 62° | 76° | — | — |
| 2020 | 65° | 57° | 61° | — | — |
| 2019 | 74° | 60° | 67° | — | — |
| 2018warmest | 91° | 67° | 79° | — | — |
| 2017 | 83° | 57° | 70° | — | — |
| 2016 | 83° | 63° | 73° | 0.13" | — |
| 2015 | 85° | 63° | 74° | 1.47" | — |
| 2014 | 67° | 48° | 57° | — | — |
| 2013 | 66° | 47° | 56° | — | — |
| 2012 | 77° | 51° | 64° | 0.99" | — |
| 2011 | 65° | 55° | 60° | — | — |
| 2010 | 67° | 49° | 58° | — | — |
| 2009 | 82° | 55° | 69° | — | — |
| 2008 | 73° | 45° | 59° | — | — |
| 2007 | 69° | 47° | 58° | — | — |
| 2006 | 78° | 63° | 70° | 0.03" | — |
| 2005 | 76° | 51° | 63° | — | — |
| 2004 | 74° | 50° | 62° | — | — |
| 2003 | 85° | 57° | 71° | — | — |
| 2002 | 74° | 52° | 63° | — | — |
| 2001 | 73° | 53° | 63° | — | — |
| 2000 | 70° | 45° | 57° | — | — |
| 1999 | 69° | 48° | 59° | — | — |
| 1998 | 75° | 53° | 64° | — | — |
| 1997 | 79° | 56° | 67° | 0.05" | — |
| 1996 | 65° | 56° | 60° | — | — |
| 1995 | 61° | 48° | 54° | — | — |
| 1994 | 74° | 60° | 67° | 0.05" | — |
| 1993 | 67° | 54° | 60° | — | — |
| 1992 | 75° | 67° | 71° | 0.71" | — |
| 1991 | 72° | 53° | 62° | — | — |
| 1990 | 61° | 51° | 56° | — | — |
| 1989 | 73° | 54° | 63° | — | — |
| 1988 | 88° | 62° | 75° | 0.64" | — |
| 1987 | 71° | 63° | 67° | 2.16" | — |
| 1986 | 63° | 54° | 58° | 0.89" | — |
| 1985 | 78° | 61° | 69° | 0.53" | — |
| 1984 | 70° | 48° | 59° | — | — |
| 1983 | 67° | 48° | 57° | 0.18" | — |
| 1982 | 65° | 53° | 59° | 0.69" | — |
| 1981coldest | 56° | 47° | 51° | 0.76" | — |
| 1980 | 64° | 48° | 56° | — | — |
| 1979 | 80° | 52° | 66° | — | — |
| 1978 | 68° | 60° | 64° | 3.25" | — |
| 1977 | 72° | 58° | 65° | 0.86" | — |
| 1976 | 72° | 58° | 65° | — | — |
| 1975 | 73° | 61° | 67° | — | — |
| 1974 | 81° | 53° | 67° | — | — |
| 1973 | 60° | 47° | 53° | 2.77" | — |
| 1972 | 77° | 68° | 73° | 1.37" | — |
| 1971 | 69° | 52° | 60° | — | — |
55 years of data from W ALLIS