Weather on October 20
Ann Arbor, MI
55 Years of Data
Avg High
59°F
Avg Low
38°F
Warmest
1979
68°F avg
Coldest
1974
34°F avg
About This Date
October 20th in Ann Arbor, MI typically brings cool fall weather, with average highs around 59°F and lows near 38°F. Over 55 years of records, the warmest October 20th was in 1979 (68°F average), while the coldest was 1974 (34°F) — a 34°F range across recorded history. Precipitation has occurred on 38% of recorded October 20th dates, with snow falling 4% of the time (heaviest snowfall: 1.1"). The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
Planning for October 20th in Ann Arbor, MI? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 61° | 34° | 47° | — | — |
| 2024 | 75° | 30° | 53° | — | — |
| 2023 | 57° | 48° | 53° | 0.3" | — |
| 2022 | 45° | 26° | 36° | 0.03" | — |
| 2021 | 70° | 38° | 54° | 0.08" | — |
| 2020 | 53° | 38° | 45° | 0.05" | — |
| 2019 | 70° | 38° | 54° | — | — |
| 2018 | 57° | 36° | 46° | 0.15" | — |
| 2017 | 74° | 33° | 53° | — | — |
| 2016 | 57° | 49° | 53° | 2.64" | — |
| 2015 | 76° | 53° | 64° | — | — |
| 2014 | 58° | 44° | 51° | 0.58" | — |
| 2013 | 60° | 32° | 46° | 0.05" | — |
| 2012 | 56° | 37° | 46° | — | — |
| 2011 | 49° | 44° | 46° | 2.41" | — |
| 2010 | 61° | 35° | 48° | — | — |
| 2009 | 62° | 32° | 47° | — | — |
| 2008 | 59° | 32° | 46° | — | — |
| 2007 | 67° | 47° | 57° | — | — |
| 2006 | 50° | 40° | 45° | — | — |
| 2005 | 56° | 28° | 42° | — | — |
| 2004 | 56° | 46° | 51° | 0.03" | — |
| 2003 | 76° | 31° | 53° | — | — |
| 2002 | 51° | 26° | 39° | — | — |
| 2001 | 66° | 32° | 49° | — | — |
| 2000 | 73° | 38° | 55° | — | — |
| 1999 | 52° | 27° | 39° | 0.03" | — |
| 1998 | 62° | 41° | 52° | — | — |
| 1997 | 58° | 41° | 49° | — | — |
| 1996 | 61° | 42° | 51° | — | — |
| 1995 | 71° | 47° | 59° | 0.97" | — |
| 1994 | 62° | 51° | 57° | 0.03" | — |
| 1993 | 56° | 46° | 51° | 0.18" | — |
| 1992 | 39° | 29° | 34° | 0.43" | 1.1" |
| 1991 | 53° | 26° | 40° | — | — |
| 1990 | 57° | 32° | 45° | — | — |
| 1989 | 37° | 33° | 35° | 0.25" | 0.1" |
| 1988 | 49° | 30° | 39° | — | — |
| 1987 | 52° | 41° | 46° | 0.3" | — |
| 1986 | 66° | 36° | 51° | — | — |
| 1985 | 56° | 46° | 51° | — | — |
| 1984 | 66° | 40° | 53° | — | — |
| 1983 | 51° | 37° | 44° | — | — |
| 1982 | 66° | 41° | 54° | 0.61" | — |
| 1981 | 64° | 34° | 49° | — | — |
| 1980 | 46° | 41° | 44° | — | — |
| 1979warmest | 75° | 60° | 68° | 0.03" | — |
| 1978 | 63° | 37° | 50° | — | — |
| 1977 | 58° | 34° | 46° | — | — |
| 1976 | 43° | 35° | 39° | 0.46" | — |
| 1975 | 62° | 42° | 52° | 0.1" | — |
| 1974coldest | 43° | 26° | 34° | — | — |
| 1973 | 64° | 45° | 54° | — | — |
| 1972 | 50° | 28° | 39° | — | — |
| 1971 | 77° | 53° | 65° | — | — |
55 years of data from ANN ARBOR 1W