Weather on October 31
Ann Arbor, MI
55 Years of Data
Avg High
57°F
Avg Low
37°F
Warmest
1974
65°F avg
Coldest
2023
30°F avg
About This Date
October 31st in Ann Arbor, MI typically brings cool fall weather, with average highs around 57°F and lows near 37°F. Over 55 years of records, the warmest October 31st was in 1974 (65°F average), while the coldest was 2023 (30°F) — a 35°F range across recorded history. Precipitation has occurred on 42% of recorded October 31st dates, with snow falling 2% of the time. The last decade has been 4.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.1°F cooler on this date compared to 20-30 years ago.
Planning for October 31st in Ann Arbor, MI? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Cooling Trend
1.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 54° | 30° | 42° | — | — |
| 2024 | 74° | 53° | 63° | — | — |
| 2023coldest | 40° | 20° | 30° | — | — |
| 2022 | 62° | 51° | 57° | 0.79" | — |
| 2021 | 58° | 36° | 47° | 0.05" | — |
| 2020 | 50° | 21° | 36° | — | — |
| 2019 | 46° | 34° | 40° | 1.93" | — |
| 2018 | 57° | 40° | 48° | 1.24" | — |
| 2017 | 42° | 32° | 37° | 0.03" | — |
| 2016 | 53° | 29° | 41° | — | — |
| 2015 | 51° | 34° | 42° | 0.28" | — |
| 2014 | 45° | 34° | 39° | 0.3" | — |
| 2013 | 63° | 54° | 58° | 2.77" | — |
| 2012 | 42° | 36° | 39° | — | — |
| 2011 | 51° | 26° | 39° | — | — |
| 2010 | 63° | 30° | 46° | — | — |
| 2009 | 71° | 44° | 58° | 0.91" | — |
| 2008 | 55° | 26° | 41° | — | — |
| 2007 | 64° | 39° | 52° | 0.1" | — |
| 2006 | 60° | 29° | 45° | — | — |
| 2005 | 64° | 28° | 46° | 0.08" | — |
| 2004 | 54° | 44° | 49° | 0.05" | — |
| 2003 | 72° | 54° | 63° | — | — |
| 2002 | 50° | 22° | 36° | — | — |
| 2001 | 67° | 43° | 55° | 0.15" | — |
| 2000 | 64° | 26° | 45° | — | — |
| 1999 | 68° | 38° | 53° | — | — |
| 1998 | 55° | 40° | 47° | — | — |
| 1997 | 58° | 46° | 52° | 1.02" | — |
| 1996 | 43° | 30° | 36° | — | — |
| 1995 | 42° | 37° | 40° | 0.36" | — |
| 1994 | 55° | 44° | 50° | 0.74" | — |
| 1993 | 37° | 31° | 34° | 0.38" | 0.6" |
| 1992 | 47° | 30° | 38° | — | — |
| 1991 | 53° | 45° | 49° | 0.15" | — |
| 1990 | 67° | 43° | 55° | — | — |
| 1989 | 67° | 43° | 55° | 0.71" | — |
| 1988 | 46° | 24° | 35° | — | — |
| 1987 | 62° | 34° | 48° | — | — |
| 1986 | 62° | 33° | 48° | — | — |
| 1985 | 55° | 40° | 47° | — | — |
| 1984 | 60° | 34° | 47° | — | — |
| 1983 | 57° | 31° | 44° | — | — |
| 1982 | 62° | 51° | 57° | 1.85" | — |
| 1981 | 61° | 45° | 53° | — | — |
| 1980 | 56° | 37° | 46° | — | — |
| 1979 | 68° | 42° | 55° | — | — |
| 1978 | 63° | 43° | 53° | — | — |
| 1977 | 60° | 42° | 51° | — | — |
| 1976 | 44° | 38° | 41° | 0.81" | — |
| 1975 | 51° | 29° | 40° | — | — |
| 1974warmest | 72° | 58° | 65° | — | — |
| 1973 | 52° | 47° | 49° | 0.3" | — |
| 1972 | 45° | 35° | 40° | 0.08" | — |
| 1971 | 71° | 57° | 64° | — | — |
55 years of data from ANN ARBOR 1W