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Duluth, MN Weather on April 20
April 20th in Duluth, MN typically brings chilly spring weather, with average highs around 48°F and lows near 33°F. Over 55 years of records, the warmest April 20th was in 2019 (59°F average), while the coldest was 2013 (26°F) — a 33°F range across recorded history. Rain or other precipitation has occurred on about 22% of April 20th dates historically, with the wettest April 20th recording 2.62" of rain. The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
What to Expect on April 20
Planning for April 20th in Duluth, MN? Bring layers as temperatures can vary throughout the day.
April 20 Weather Records for Duluth
- •The all-time record high for April 20th in Duluth, MN is 74°F, set in 2019.
- •The coldest April 20th on record dropped to 18°F in 2013.
- •A freeze (32°F or below) has occurred on April 20th in 22 of the last 55 years.
- •Last year (1971), April 20th was 5°F warmer than the long-term average.
Frequently Asked Questions
What was the warmest April 20 ever in Duluth?
The warmest April 20 in Duluth, MN reached 74°F in 2019. That is 26°F above the long-term average high of 48°F.
What was the coldest April 20 ever in Duluth?
The coldest April 20 in Duluth, MN dropped to 18°F in 2013. That is 15°F below the long-term average low of 33°F.
What is the average temperature on April 20 in Duluth?
On April 20, Duluth averages a high of 48°F and a low of 33°F based on 55 years of NOAA weather observations from DULUTH HARBOR STN.
How many years of weather data are available for April 20 in Duluth?
We have 55 years of weather records for April 20 in Duluth, MN, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
April 20 Weather History in Duluth
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 41°F | 33°F | 0" | -- |
| 2024 | 49°F | 31°F | 0" | -- |
| 2023 | 35°F | 33°F | 2.62" | -- |
| 2022 | 37°F | 33°F | 0.81" | -- |
| 2021 | 41°F | 32°F | 0" | -- |
| 2020 | 51°F | 34°F | 0" | -- |
| 2019 | 74°F | 45°F | 0" | -- |
| 2018 | 58°F | 32°F | 0" | -- |
| 2017 | 39°F | 35°F | 1.47" | -- |
| 2016 | 45°F | 38°F | 0" | -- |
| 2015 | 42°F | 34°F | 0" | -- |
| 2014 | 48°F | 27°F | 0" | -- |
| 2013 | 35°F | 18°F | 0" | -- |
| 2012 | 50°F | 34°F | 0" | -- |
| 2011 | 46°F | 33°F | 0" | -- |
| 2010 | 72°F | 32°F | 0" | -- |
| 2009 | 44°F | 33°F | 0" | -- |
| 2008 | 42°F | 37°F | 0.05" | -- |
| 2007 | 63°F | 37°F | 0" | -- |
| 2006 | 46°F | 41°F | 0.05" | -- |
| 2005 | 46°F | 35°F | 0" | -- |
| 2004 | 49°F | 32°F | -- | -- |
| 2003 | 37°F | 23°F | -- | -- |
| 2002 | 44°F | 25°F | -- | -- |
| 2001 | 42°F | 37°F | -- | -- |
| 2000 | 54°F | 34°F | -- | -- |
| 1999 | 47°F | 33°F | -- | -- |
| 1998 | 46°F | 36°F | -- | -- |
| 1997 | 38°F | 31°F | 0" | -- |
| 1996 | 55°F | 35°F | -- | -- |
| 1995 | 38°F | 29°F | -- | -- |
| 1994 | 54°F | 35°F | 0" | -- |
| 1993 | 44°F | 35°F | 0" | -- |
| 1992 | 41°F | 32°F | 1.02" | -- |
| 1991 | 37°F | 26°F | 0" | -- |
| 1990 | 66°F | 40°F | -- | -- |
| 1989 | 43°F | 33°F | 0" | -- |
| 1988 | 46°F | 31°F | 0" | -- |
| 1987 | 74°F | 43°F | 0" | -- |
| 1986 | 47°F | 33°F | 0" | -- |
| 1985 | 66°F | 36°F | 0.03" | -- |
| 1984 | 51°F | 31°F | 0" | -- |
| 1983 | 56°F | 37°F | 0" | -- |
| 1982 | 44°F | 29°F | 0" | -- |
| 1981 | 46°F | 29°F | 0" | -- |
| 1980 | 53°F | 40°F | 0" | -- |
| 1979 | 43°F | 31°F | 1.27" | -- |
| 1978 | 39°F | 32°F | 0.13" | -- |
| 1977 | 52°F | 35°F | 0.89" | -- |
| 1976 | 43°F | 36°F | 0" | -- |
| 1975 | 47°F | 32°F | 0" | -- |
| 1974 | 40°F | 31°F | 0.66" | -- |
| 1973 | 58°F | 40°F | 1.07" | -- |
| 1972 | 40°F | 24°F | 0" | -- |
| 1971 | 53°F | 34°F | 0" | -- |
Based on 55 years of data from NOAA station: DULUTH HARBOR STN
Monthly Climate Averages
Historical temperature and precipitation averages for Duluth, MN, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.