Weather on December 18
Madison, WI
55 Years of Data
Avg High
30°F
Avg Low
12°F
Warmest
1977
41°F avg
Coldest
1983
-8°F avg
About This Date
December 18th in Madison, WI typically brings very cold winter weather, with average highs around 30°F and lows near 12°F. Over 55 years of records, the warmest December 18th was in 1977 (41°F average), while the coldest was 1983 (-8°F) — a 49°F range across recorded history. Precipitation has occurred on 16% of recorded December 18th dates, with snow falling 5% of the time (heaviest snowfall: 2.7"). The last decade has been 3.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.1°F warmer on this date compared to 20-30 years ago.
Planning for December 18th in Madison, WI? Bundle up with warm layers and protect extremities from the cold.
Warming Trend
1.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 41° | 28° | 35° | 0.05" | — |
| 2024 | 38° | 24° | 31° | 0.05" | 0.2" |
| 2023 | 39° | 24° | 32° | — | — |
| 2022 | 24° | 14° | 19° | — | — |
| 2021 | 33° | 19° | 26° | — | — |
| 2020 | 33° | 11° | 22° | — | — |
| 2019 | 27° | 3° | 15° | — | — |
| 2018 | 43° | 16° | 29° | — | — |
| 2017 | 34° | 32° | 33° | 0.05" | — |
| 2016 | 17° | -7° | 5° | 0.48" | 2.7" |
| 2015 | 33° | 19° | 26° | — | — |
| 2014 | 25° | 14° | 19° | — | — |
| 2013 | 36° | 8° | 22° | — | — |
| 2012 | 31° | 25° | 28° | — | — |
| 2011 | 30° | 17° | 24° | — | — |
| 2010 | 23° | 6° | 15° | — | — |
| 2009 | 28° | -2° | 13° | — | — |
| 2008 | 18° | -3° | 8° | — | — |
| 2007 | 23° | 13° | 18° | — | — |
| 2006 | 45° | 23° | 34° | — | — |
| 2005 | 20° | -5° | 7° | — | — |
| 2004 | 32° | 12° | 22° | — | — |
| 2003 | 28° | 12° | 20° | — | — |
| 2002 | 44° | 31° | 37° | 0.36" | — |
| 2001 | 39° | 24° | 32° | — | — |
| 2000 | 12° | -4° | 4° | 0.15" | 0.3" |
| 1999 | 22° | 2° | 12° | — | — |
| 1998 | 38° | 23° | 30° | — | — |
| 1997 | 45° | 28° | 36° | — | — |
| 1996 | 26° | 5° | 16° | — | — |
| 1995 | 33° | 9° | 21° | — | — |
| 1994 | 37° | 22° | 29° | — | — |
| 1993 | 33° | 31° | 32° | 0.41" | — |
| 1992 | 33° | 13° | 23° | — | — |
| 1991 | 32° | 5° | 19° | — | — |
| 1990 | 35° | 29° | 32° | 0.56" | — |
| 1989 | 20° | -7° | 6° | — | — |
| 1988 | 23° | 4° | 13° | — | — |
| 1987 | 27° | 3° | 15° | — | — |
| 1986 | 35° | 26° | 31° | — | — |
| 1985 | 14° | -19° | -2° | — | — |
| 1984 | 33° | 8° | 21° | — | — |
| 1983coldest | 1° | -18° | -8° | — | — |
| 1982 | 34° | 19° | 26° | — | — |
| 1981 | 22° | 2° | 12° | — | — |
| 1980 | 38° | 26° | 32° | — | — |
| 1979 | 20° | -3° | 9° | — | — |
| 1978 | 39° | 21° | 30° | — | — |
| 1977warmest | 47° | 35° | 41° | — | — |
| 1976 | 40° | 5° | 22° | — | — |
| 1975 | 10° | -5° | 3° | — | — |
| 1974 | 24° | 14° | 19° | — | — |
| 1973 | 26° | 12° | 19° | 0.03" | — |
| 1972 | 30° | -7° | 12° | — | — |
| 1971 | 15° | 4° | 9° | — | — |
55 years of data from UW ARBORETUM - MADISON