Weather on September 20
Duluth, MN
55 Years of Data
About This Date
September 20th in Duluth, MN typically brings mild fall weather, with average highs around 64°F and lows near 50°F. Over 56 years of records, the warmest September 20th was in 2022 (72°F average), while the coldest was 1982 (43°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 25% of September 20th dates historically, with the wettest September 20th recording 3.51" of rain. The last decade has been 4.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.7°F warmer on this date compared to 20-30 years ago.
Planning for September 20th in Duluth, MN? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 59° | 52° | 55° | — | — |
| 2025 | 61° | 56° | 58° | — | — |
| 2024 | 78° | 59° | 69° | — | — |
| 2023 | 69° | 57° | 63° | — | — |
| 2022warmest | 85° | 60° | 72° | — | — |
| 2021 | 78° | 57° | 68° | 0.63" | — |
| 2020 | 72° | 54° | 63° | — | — |
| 2019 | 59° | 54° | 56° | — | — |
| 2018 | 60° | 57° | 59° | 1.04" | — |
| 2017 | 75° | 53° | 64° | 0.97" | — |
| 2016 | 76° | 51° | 63° | — | — |
| 2015 | 73° | 48° | 61° | — | — |
| 2014 | 70° | 53° | 61° | 0.58" | — |
| 2013 | 66° | 51° | 59° | 0.01" | — |
| 2012 | 60° | 49° | 54° | — | — |
| 2011 | 60° | 51° | 56° | 0.04" | — |
| 2010 | 57° | 50° | 54° | — | — |
| 2009 | 67° | 57° | 62° | — | — |
| 2008 | 59° | 46° | 53° | — | — |
| 2007 | 60° | 42° | 51° | 0.73" | — |
| 2006 | 60° | 38° | 49° | — | — |
| 2005 | 82° | 51° | 67° | — | — |
| 2004 | 62° | 48° | 55° | — | — |
| 2003 | 57° | 45° | 51° | — | — |
| 2002 | 70° | 44° | 57° | — | — |
| 2001 | 66° | 51° | 59° | — | — |
| 2000 | 70° | 51° | 60° | — | — |
| 1999 | 74° | 44° | 59° | — | — |
| 1998 | 64° | 57° | 61° | — | — |
| 1997 | 64° | 47° | 55° | — | — |
| 1996 | 61° | 51° | 56° | — | — |
| 1995 | 54° | 40° | 47° | — | — |
| 1994 | 68° | 59° | 64° | — | — |
| 1993 | 50° | 45° | 47° | — | — |
| 1992 | 69° | 61° | 65° | — | — |
| 1991 | 68° | 39° | 54° | — | — |
| 1990 | 69° | 50° | 60° | — | — |
| 1989 | 61° | 57° | 59° | — | — |
| 1988 | 53° | 46° | 50° | — | — |
| 1987 | 65° | 58° | 61° | 0.26" | — |
| 1986 | 53° | 50° | 52° | — | — |
| 1985 | 61° | 40° | 50° | — | — |
| 1984 | 68° | 56° | 62° | — | — |
| 1983 | 52° | 43° | 47° | — | — |
| 1982coldest | 48° | 38° | 43° | — | — |
| 1981 | 59° | 53° | 56° | 0.01" | — |
| 1980 | 56° | 49° | 52° | — | — |
| 1979 | 61° | 53° | 57° | — | — |
| 1978 | 62° | 50° | 56° | — | — |
| 1977 | 53° | 51° | 52° | 0.02" | — |
| 1976 | 60° | 38° | 49° | 0.35" | — |
| 1975 | 57° | 47° | 52° | 0.08" | — |
| 1974 | 59° | 46° | 53° | 0.01" | — |
| 1973 | 55° | 39° | 47° | — | — |
| 1972 | 67° | 55° | 61° | 3.51" | — |
| 1971 | 68° | 47° | 57° | — | — |
Duluth, MN Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Duluth, MN Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Duluth, MN Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Duluth, MN
Most pleasant months in Duluth, MN: June, July, August, September.