Weather on August 20
Ann Arbor, MI
55 Years of Data
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.
| 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" | — |
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.