Weather on October 20
Ann Arbor, MI
55 Years of Data
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° | — | — |
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.