Weather on September 15
Milwaukee, WI
55 Years of Data
Avg High
72°F
Avg Low
55°F
Warmest
1994
82°F avg
Coldest
2007
49°F avg
About This Date
September 15th in Milwaukee, WI typically brings pleasant fall weather, with average highs around 72°F and lows near 55°F. Over 55 years of records, the warmest September 15th was in 1994 (82°F average), while the coldest was 2007 (49°F) — a 33°F range across recorded history. Rain or other precipitation has occurred on about 27% of September 15th dates historically, with the wettest September 15th recording 1.35" of rain. The last decade has been 4.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.4°F warmer on this date compared to 20-30 years ago.
Planning for September 15th in Milwaukee, WI? Great weather for outdoor activities.
Warming Trend
1.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 57° | 69° | — | — |
| 2024 | 85° | 62° | 73° | — | — |
| 2023 | 71° | 50° | 61° | — | — |
| 2022 | 81° | 59° | 70° | — | — |
| 2021 | 75° | 57° | 66° | — | — |
| 2020 | 79° | 59° | 69° | — | — |
| 2019 | 76° | 67° | 71° | 0.03" | — |
| 2018 | 79° | 61° | 70° | — | — |
| 2017 | 83° | 61° | 72° | — | — |
| 2016 | 74° | 59° | 66° | — | — |
| 2015 | 84° | 64° | 74° | — | — |
| 2014 | 57° | 48° | 53° | 0.13" | — |
| 2013 | 62° | 54° | 58° | 0.94" | — |
| 2012 | 74° | 50° | 62° | — | — |
| 2011 | 58° | 40° | 49° | — | — |
| 2010 | 80° | 50° | 65° | — | — |
| 2009 | 89° | 63° | 76° | — | — |
| 2008 | 62° | 50° | 56° | 1.35" | — |
| 2007coldest | 60° | 37° | 49° | — | — |
| 2006 | 75° | 52° | 63° | — | — |
| 2005 | 78° | 51° | 65° | — | — |
| 2004 | 88° | 66° | 77° | — | — |
| 2003 | 70° | 51° | 60° | 1.17" | — |
| 2002 | 83° | 51° | 67° | 0.08" | — |
| 2001 | 68° | 50° | 59° | — | — |
| 2000 | 81° | 47° | 64° | — | — |
| 1999 | 68° | 47° | 57° | — | — |
| 1998 | 70° | 65° | 67° | 0.03" | — |
| 1997 | 74° | 56° | 65° | — | — |
| 1996 | 69° | 55° | 62° | — | — |
| 1995 | 66° | 52° | 59° | — | — |
| 1994warmest | 92° | 73° | 82° | — | — |
| 1993 | 57° | 49° | 53° | — | — |
| 1992 | 76° | 64° | 70° | 0.08" | — |
| 1991 | 88° | 73° | 80° | 1.02" | — |
| 1990 | 74° | 57° | 65° | — | — |
| 1989 | 65° | 47° | 56° | — | — |
| 1988 | 65° | 54° | 59° | — | — |
| 1987 | 74° | 60° | 67° | 1.02" | — |
| 1986 | 61° | 53° | 57° | — | — |
| 1985 | 71° | 48° | 60° | — | — |
| 1984 | 63° | 45° | 54° | — | — |
| 1983 | 67° | 56° | 61° | 1.14" | — |
| 1982 | 66° | 52° | 59° | 0.05" | — |
| 1981 | 74° | 58° | 66° | — | — |
| 1980 | 64° | 54° | 59° | — | — |
| 1979 | 70° | 49° | 59° | — | — |
| 1978 | 81° | 57° | 69° | 0.03" | — |
| 1977 | 63° | 54° | 58° | 0.36" | — |
| 1976 | 63° | 52° | 57° | — | — |
| 1975 | 66° | 54° | 60° | 0.08" | — |
| 1974 | 74° | 55° | 64° | — | — |
| 1973 | 61° | 50° | 55° | — | — |
| 1972 | 78° | 53° | 66° | — | — |
| 1971 | 74° | 54° | 64° | — | — |
55 years of data from W ALLIS