Weather on December 21
Duluth, MN
55 Years of Data
Avg High
25°F
Avg Low
11°F
Warmest
2007
35°F avg
Coldest
1989
-15°F avg
About This Date
December 21st in Duluth, MN typically brings very cold winter weather, with average highs around 25°F and lows near 11°F. Over 55 years of records, the warmest December 21st was in 2007 (35°F average), while the coldest was 1989 (-15°F) — a 50°F range across recorded history. Precipitation has occurred on 25% of recorded December 21st dates, with snow falling 22% of the time (heaviest snowfall: 4"). The last decade has been 3.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.0°F warmer on this date compared to 20-30 years ago.
Planning for December 21st in Duluth, MN? Bundle up with warm layers and protect extremities from the cold. Check road conditions if traveling, as snow is possible.
Warming Trend
1.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 18° | 0° | 9° | — | — |
| 2024 | 18° | -3° | 8° | — | — |
| 2023 | 37° | 32° | 35° | — | — |
| 2022 | 0° | -12° | -6° | 0.51" | 2" |
| 2021 | 16° | 6° | 11° | 0.84" | 2" |
| 2020 | 34° | 27° | 30° | 0.69" | 1" |
| 2019 | 37° | 19° | 28° | — | — |
| 2018 | 23° | 17° | 20° | — | — |
| 2017 | 24° | 16° | 20° | 0.08" | 1" |
| 2016 | 35° | 21° | 28° | — | — |
| 2015 | 29° | 25° | 27° | — | — |
| 2014 | 36° | 32° | 34° | — | — |
| 2013 | 24° | 5° | 15° | 0.08" | 0.3" |
| 2012 | 34° | 9° | 21° | — | — |
| 2011 | 35° | 25° | 30° | — | — |
| 2010 | 31° | 24° | 27° | 0.64" | 4" |
| 2009 | 27° | 22° | 24° | 0.05" | 0.2" |
| 2008 | 13° | -6° | 4° | — | — |
| 2007warmest | 37° | 32° | 35° | — | — |
| 2006 | 35° | 24° | 30° | — | — |
| 2005 | 20° | 13° | 16° | — | — |
| 2004 | 24° | 1° | 13° | 0.05" | 0.2" |
| 2003 | 32° | 17° | 25° | — | — |
| 2002 | 30° | 22° | 26° | — | — |
| 2001 | 34° | 17° | 25° | — | — |
| 2000 | 14° | 9° | 11° | — | — |
| 1999 | 7° | -9° | -1° | — | — |
| 1998 | 19° | -3° | 8° | — | — |
| 1997 | 29° | 18° | 23° | — | — |
| 1996 | 19° | -5° | 7° | — | — |
| 1995 | 25° | 5° | 15° | — | — |
| 1994 | 38° | 17° | 27° | — | — |
| 1993 | 27° | 17° | 22° | — | — |
| 1992 | 21° | 10° | 16° | 0.03" | — |
| 1991 | 36° | 19° | 27° | — | — |
| 1990 | 30° | 0° | 15° | 0.89" | — |
| 1989coldest | -6° | -24° | -15° | — | — |
| 1988 | 18° | 17° | 17° | — | — |
| 1987 | 32° | 19° | 26° | — | — |
| 1986 | 32° | 14° | 23° | — | — |
| 1985 | 16° | -8° | 4° | — | — |
| 1984 | 28° | 6° | 17° | — | — |
| 1983 | 17° | -1° | 8° | 0.64" | 2.5" |
| 1982 | 28° | 10° | 19° | — | — |
| 1981 | 36° | 27° | 31° | 0.03" | 0.1" |
| 1980 | 15° | 1° | 8° | 0.08" | — |
| 1979 | 37° | 26° | 32° | — | — |
| 1978 | 20° | 12° | 16° | — | 1" |
| 1977 | 30° | 14° | 22° | — | — |
| 1976 | 14° | -10° | 2° | — | — |
| 1975 | 25° | 3° | 14° | — | — |
| 1974 | 21° | 17° | 19° | — | — |
| 1973 | 19° | -7° | 6° | — | — |
| 1972 | 26° | 17° | 22° | 0.1" | 0.4" |
| 1971 | 26° | -5° | 11° | — | — |
55 years of data from DULUTH HARBOR STN