Weather on August 31
Ann Arbor, MI
55 Years of Data
Avg High
80°F
Avg Low
57°F
Warmest
2010
81°F avg
Coldest
2009
54°F avg
About This Date
August 31st in Ann Arbor, MI typically brings warm summer weather, with average highs around 80°F and lows near 57°F. Over 55 years of records, the warmest August 31st was in 2010 (81°F average), while the coldest was 2009 (54°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 27% of August 31st dates historically, with the wettest August 31st recording 3.96" of rain. The last decade has been 3.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.1°F cooler on this date compared to 20-30 years ago.
Planning for August 31st in Ann Arbor, MI? Stay hydrated and seek shade during peak afternoon hours.
Cooling Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 76° | 40° | 58° | — | — |
| 2024 | 83° | 58° | 70° | 0.03" | — |
| 2023 | 74° | 41° | 57° | — | — |
| 2022 | 82° | 52° | 67° | — | — |
| 2021 | 83° | 57° | 70° | — | — |
| 2020 | 80° | 48° | 64° | — | — |
| 2019 | 75° | 53° | 64° | — | — |
| 2018 | 81° | 52° | 66° | — | — |
| 2017 | 73° | 52° | 62° | — | — |
| 2016 | 81° | 53° | 67° | — | — |
| 2015 | 84° | 58° | 71° | — | — |
| 2014 | 85° | 67° | 76° | 0.15" | — |
| 2013 | 83° | 68° | 75° | — | — |
| 2012 | 85° | 62° | 73° | — | — |
| 2011 | 78° | 61° | 69° | — | — |
| 2010warmest | 93° | 70° | 81° | — | — |
| 2009coldest | 66° | 43° | 54° | — | — |
| 2008 | 86° | 55° | 71° | — | — |
| 2007 | 77° | 46° | 62° | — | — |
| 2006 | 74° | 56° | 65° | 0.03" | — |
| 2005 | 80° | 60° | 70° | — | — |
| 2004 | 78° | 47° | 62° | 0.03" | — |
| 2003 | 72° | 52° | 62° | 0.23" | — |
| 2002 | 82° | 56° | 69° | — | — |
| 2001 | 81° | 59° | 70° | — | — |
| 2000 | 86° | 65° | 75° | — | — |
| 1999 | 77° | 50° | 64° | — | — |
| 1998 | 79° | 55° | 67° | — | — |
| 1997 | 74° | 61° | 67° | 0.48" | — |
| 1996 | 82° | 58° | 70° | — | — |
| 1995 | 88° | 71° | 79° | — | — |
| 1994 | 69° | 58° | 63° | 0.33" | — |
| 1993 | 82° | 65° | 73° | 0.1" | — |
| 1992 | 73° | 55° | 64° | — | — |
| 1991 | 88° | 66° | 77° | 3.96" | — |
| 1990 | 80° | 58° | 69° | — | — |
| 1989 | 83° | 55° | 69° | — | — |
| 1988 | 78° | 54° | 66° | — | — |
| 1987 | 78° | 58° | 68° | 0.03" | — |
| 1986 | 75° | 48° | 62° | — | — |
| 1985 | 71° | 54° | 62° | — | — |
| 1984 | 80° | 53° | 67° | — | — |
| 1983 | 83° | 66° | 74° | 0.05" | — |
| 1982 | 82° | 60° | 71° | — | — |
| 1981 | 80° | 66° | 73° | 0.05" | — |
| 1980 | 78° | 66° | 72° | 2.64" | — |
| 1979 | 84° | 60° | 72° | — | — |
| 1978 | 77° | 56° | 66° | — | — |
| 1977 | 85° | 59° | 72° | — | — |
| 1976 | 86° | 50° | 68° | — | — |
| 1975 | 77° | 63° | 70° | 2.57" | — |
| 1974 | 78° | 62° | 70° | — | — |
| 1973 | 88° | 66° | 77° | 0.03" | — |
| 1972 | 84° | 63° | 73° | — | — |
| 1971 | 87° | 62° | 75° | — | — |
55 years of data from ANN ARBOR 1W