Weather on August 20
Ann Arbor, MI
55 Years of Data
Avg High
79°F
Avg Low
57°F
Warmest
1983
84°F avg
Coldest
2004
56°F avg
About This Date
August 20th in Ann Arbor, MI typically brings pleasant summer weather, with average highs around 79°F and lows near 57°F. Over 55 years of records, the warmest August 20th was in 1983 (84°F average), while the coldest was 2004 (56°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 42% of August 20th dates historically, with the wettest August 20th recording 3.68" of rain. The last decade has been 3.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.0°F warmer on this date compared to 20-30 years ago.
Planning for August 20th in Ann Arbor, MI? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Cooling Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 70° | 65° | 67° | — | — |
| 2024 | 72° | 43° | 57° | — | — |
| 2023 | 86° | 55° | 71° | — | — |
| 2022 | 82° | 57° | 70° | 0.05" | — |
| 2021 | 88° | 59° | 73° | — | — |
| 2020 | 82° | 45° | 63° | — | — |
| 2019 | 87° | 63° | 75° | 0.03" | — |
| 2018 | 81° | 56° | 68° | — | — |
| 2017 | 85° | 50° | 67° | — | — |
| 2016 | 84° | 62° | 73° | 0.05" | — |
| 2015 | 73° | 57° | 65° | 0.61" | — |
| 2014 | 83° | 62° | 72° | 0.05" | — |
| 2013 | 85° | 53° | 69° | — | — |
| 2012 | 77° | 51° | 64° | — | — |
| 2011 | 83° | 60° | 71° | — | — |
| 2010 | 86° | 64° | 75° | — | — |
| 2009 | 82° | 64° | 73° | 0.15" | — |
| 2008 | 76° | 49° | 62° | — | — |
| 2007 | 63° | 60° | 61° | 3.15" | — |
| 2006 | 78° | 50° | 64° | — | — |
| 2005 | 83° | 58° | 70° | 0.94" | — |
| 2004coldest | 66° | 47° | 56° | 0.51" | — |
| 2003 | 83° | 52° | 67° | — | — |
| 2002 | 77° | 48° | 63° | 0.03" | — |
| 2001 | 76° | 56° | 66° | 0.03" | — |
| 2000 | 72° | 43° | 57° | — | — |
| 1999 | 79° | 51° | 65° | — | — |
| 1998 | 82° | 51° | 67° | — | — |
| 1997 | 69° | 60° | 65° | 0.89" | — |
| 1996 | 90° | 67° | 78° | 0.81" | — |
| 1995 | 87° | 67° | 77° | — | — |
| 1994 | 80° | 66° | 73° | 0.53" | — |
| 1993 | 84° | 69° | 77° | 0.03" | — |
| 1992 | 74° | 49° | 61° | — | — |
| 1991 | 71° | 60° | 66° | 1.37" | — |
| 1990 | 66° | 57° | 62° | 0.1" | — |
| 1989 | 79° | 61° | 70° | 0.86" | — |
| 1988 | 77° | 56° | 66° | — | — |
| 1987 | 82° | 53° | 68° | — | — |
| 1986 | 83° | 58° | 70° | — | — |
| 1985 | 68° | 53° | 61° | — | — |
| 1984 | 76° | 51° | 63° | — | — |
| 1983warmest | 92° | 76° | 84° | — | — |
| 1982 | 83° | 67° | 75° | 0.43" | — |
| 1981 | 80° | 54° | 67° | — | — |
| 1980 | 81° | 66° | 73° | 3.68" | — |
| 1979 | 73° | 60° | 67° | 0.84" | — |
| 1978 | 75° | 51° | 63° | — | — |
| 1977 | 70° | 45° | 57° | — | — |
| 1976 | 87° | 60° | 74° | — | — |
| 1975 | 77° | 54° | 65° | — | — |
| 1974 | 89° | 68° | 79° | — | — |
| 1973 | 83° | 62° | 72° | 2.08" | — |
| 1972 | 86° | 63° | 74° | — | — |
| 1971 | 88° | 59° | 73° | 0.03" | — |
55 years of data from ANN ARBOR 1W