Weather on April 21
Duluth, MN
55 Years of Data
Avg High
48°F
Avg Low
34°F
Warmest
1973
52°F avg
Coldest
1986
32°F avg
About This Date
April 21st in Duluth, MN typically brings chilly spring weather, with average highs around 48°F and lows near 34°F. Over 55 years of records, the warmest April 21st was in 1973 (52°F average), while the coldest was 1986 (32°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 31% of April 21st dates historically, with the wettest April 21st recording 1.4" of rain. 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 April 21st in Duluth, MN? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 58° | 33° | 45° | 0.99" | — |
| 2024 | 62° | 32° | 47° | — | — |
| 2023 | 40° | 32° | 36° | 0.2" | — |
| 2022 | 50° | 35° | 43° | — | — |
| 2021 | 37° | 31° | 34° | — | — |
| 2020 | 45° | 27° | 36° | — | — |
| 2019 | 50° | 42° | 46° | 0.2" | — |
| 2018 | 57° | 28° | 43° | — | — |
| 2017 | 52° | 33° | 42° | — | — |
| 2016 | 62° | 39° | 51° | 0.15" | — |
| 2015 | 38° | 30° | 34° | 0.03" | — |
| 2014 | 66° | 35° | 51° | — | — |
| 2013 | 40° | 25° | 32° | 0.3" | — |
| 2012 | 40° | 37° | 38° | 0.33" | — |
| 2011 | 51° | 29° | 40° | — | — |
| 2010 | 39° | 27° | 33° | — | — |
| 2009 | 57° | 40° | 48° | — | — |
| 2008 | 48° | 37° | 43° | 1.4" | — |
| 2007 | 56° | 42° | 49° | 0.36" | — |
| 2006 | 48° | 39° | 44° | 0.43" | — |
| 2005 | 39° | 32° | 36° | — | — |
| 2004 | 56° | 32° | 44° | — | — |
| 2003 | 45° | 32° | 38° | — | — |
| 2002 | 41° | 31° | 36° | — | — |
| 2001 | 43° | 37° | 40° | — | — |
| 2000 | 39° | 30° | 35° | — | — |
| 1999 | 43° | 34° | 38° | — | — |
| 1998 | 60° | 41° | 51° | — | — |
| 1997 | 40° | 33° | 36° | — | — |
| 1996 | 43° | 34° | 38° | — | — |
| 1995 | 58° | 32° | 45° | — | — |
| 1994 | 43° | 34° | 38° | — | — |
| 1993 | 57° | 40° | 48° | — | — |
| 1992 | 35° | 32° | 34° | 0.71" | — |
| 1991 | 38° | 28° | 33° | — | — |
| 1990 | 41° | 35° | 38° | — | — |
| 1989 | 42° | 34° | 38° | — | — |
| 1988 | 49° | 31° | 40° | — | — |
| 1987 | 45° | 37° | 41° | — | — |
| 1986coldest | 35° | 29° | 32° | — | — |
| 1985 | 44° | 37° | 41° | 1.07" | — |
| 1984 | 38° | 30° | 34° | — | — |
| 1983 | 59° | 38° | 48° | — | — |
| 1982 | 54° | 33° | 43° | — | — |
| 1981 | 44° | 29° | 36° | 1.14" | — |
| 1980 | 47° | 39° | 43° | — | — |
| 1979 | 51° | 38° | 44° | — | — |
| 1978 | 40° | 28° | 34° | — | — |
| 1977 | 64° | 35° | 50° | 0.05" | — |
| 1976 | 45° | 36° | 40° | — | — |
| 1975 | 48° | 25° | 36° | — | — |
| 1974 | 45° | 36° | 40° | 0.81" | — |
| 1973warmest | 65° | 40° | 52° | 0.2" | — |
| 1972 | 38° | 28° | 33° | 0.08" | — |
| 1971 | 43° | 31° | 37° | — | — |
55 years of data from DULUTH HARBOR STN