Weather on December 20
Madison, WI
55 Years of Data
Avg High
31°F
Avg Low
13°F
Warmest
2018
42°F avg
Coldest
1983
-9°F avg
About This Date
December 20th in Madison, WI typically brings very cold winter weather, with average highs around 31°F and lows near 13°F. Over 55 years of records, the warmest December 20th was in 2018 (42°F average), while the coldest was 1983 (-9°F) — a 51°F range across recorded history. Precipitation has occurred on 29% of recorded December 20th dates, with snow falling 11% of the time (heaviest snowfall: 13.5"). The last decade has been 5.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.5°F warmer on this date compared to 20-30 years ago.
Planning for December 20th in Madison, WI? Bundle up with warm layers and protect extremities from the cold.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 34° | 9° | 21° | — | — |
| 2024 | 29° | 22° | 25° | 0.76" | 3.5" |
| 2023 | 33° | 17° | 25° | — | — |
| 2022 | 25° | 11° | 18° | 0.05" | 0.3" |
| 2021 | 35° | 20° | 27° | — | — |
| 2020 | 36° | 24° | 30° | — | — |
| 2019 | 38° | 17° | 27° | — | — |
| 2018warmest | 46° | 37° | 42° | 0.2" | — |
| 2017 | 48° | 24° | 36° | — | — |
| 2016 | 21° | -9° | 6° | — | — |
| 2015 | 36° | 15° | 25° | — | — |
| 2014 | 27° | 23° | 25° | — | — |
| 2013 | 29° | 20° | 24° | 0.15" | — |
| 2012 | 32° | 29° | 30° | 4.65" | 13.5" |
| 2011 | 41° | 21° | 31° | — | — |
| 2010 | 23° | 2° | 12° | — | — |
| 2009 | 29° | 21° | 25° | 0.03" | 0.1" |
| 2008 | 26° | -1° | 13° | 0.13" | 2" |
| 2007 | 30° | 17° | 24° | — | — |
| 2006 | 44° | 17° | 31° | — | — |
| 2005 | 14° | -7° | 4° | — | — |
| 2004 | 35° | -1° | 17° | — | — |
| 2003 | 24° | 11° | 17° | — | — |
| 2002 | 43° | 30° | 36° | — | — |
| 2001 | 38° | 18° | 28° | — | — |
| 2000 | 21° | -6° | 8° | — | — |
| 1999 | 33° | 9° | 21° | 0.13" | 1" |
| 1998 | 32° | 24° | 28° | — | — |
| 1997 | 43° | 28° | 35° | 0.05" | — |
| 1996 | 19° | -3° | 8° | — | — |
| 1995 | 28° | 5° | 17° | — | — |
| 1994 | 35° | 20° | 27° | — | — |
| 1993 | 36° | 29° | 32° | — | — |
| 1992 | 31° | 3° | 17° | — | — |
| 1991 | 32° | -1° | 16° | 0.18" | — |
| 1990 | 34° | 24° | 29° | — | — |
| 1989 | 11° | -11° | 0° | — | — |
| 1988 | 53° | 27° | 40° | 0.23" | — |
| 1987 | 34° | 28° | 31° | 1.57" | — |
| 1986 | 42° | 16° | 29° | — | — |
| 1985 | 10° | -19° | -4° | — | — |
| 1984 | 33° | 10° | 22° | — | — |
| 1983coldest | 0° | -19° | -9° | — | — |
| 1982 | 34° | 26° | 30° | — | — |
| 1981 | 19° | -5° | 7° | — | — |
| 1980 | 11° | -5° | 3° | — | — |
| 1979 | 39° | 9° | 24° | — | — |
| 1978 | 32° | 27° | 29° | 0.2" | — |
| 1977 | 35° | 26° | 31° | 1.3" | — |
| 1976 | 49° | 13° | 31° | 0.08" | — |
| 1975 | 31° | 9° | 20° | — | — |
| 1974 | 30° | 13° | 21° | — | — |
| 1973 | 26° | 4° | 15° | 0.03" | — |
| 1972 | 41° | 32° | 37° | — | — |
| 1971 | 35° | 16° | 25° | — | — |
55 years of data from UW ARBORETUM - MADISON