Weather on August 31
Ann Arbor, MI
55 Years of Data
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.
| 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° | — | — |
Ann Arbor, MI Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Ann Arbor, MI Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Ann Arbor, MI Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Ann Arbor, MI
Ann Arbor, MI has no months that meet our "pleasant" threshold — every season has tradeoffs.