Weather on August 20
Duluth, MN
55 Years of Data
Avg High
72°F
Avg Low
58°F
Warmest
1976
82°F avg
Coldest
2004
53°F avg
About This Date
August 20th in Duluth, MN typically brings pleasant summer weather, with average highs around 72°F and lows near 58°F. Over 55 years of records, the warmest August 20th was in 1976 (82°F average), while the coldest was 2004 (53°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 24% of August 20th dates historically, with the wettest August 20th recording 6.65" of rain. The last decade has been 6.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 6.0°F warmer on this date compared to 20-30 years ago.
Planning for August 20th in Duluth, MN? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 70° | 63° | 66° | — | — |
| 2024 | 66° | 59° | 63° | — | — |
| 2023 | 77° | 63° | 70° | — | — |
| 2022 | 67° | 62° | 64° | — | — |
| 2021 | 90° | 71° | 80° | — | — |
| 2020 | 72° | 61° | 66° | — | — |
| 2019 | 84° | 61° | 72° | 0.51" | — |
| 2018 | 70° | 64° | 67° | — | — |
| 2017 | 81° | 61° | 71° | — | — |
| 2016 | 71° | 60° | 66° | — | — |
| 2015 | 66° | 50° | 58° | 0.05" | — |
| 2014 | 73° | 61° | 67° | 0.03" | — |
| 2013 | 92° | 68° | 80° | — | — |
| 2012 | 77° | 47° | 62° | — | — |
| 2011 | 77° | 53° | 65° | 0.61" | — |
| 2010 | 59° | 52° | 55° | 2.74" | — |
| 2009 | 64° | 55° | 60° | 0.51" | — |
| 2008 | 68° | 60° | 64° | — | — |
| 2007 | 62° | 54° | 58° | 0.13" | — |
| 2006 | 83° | 54° | 68° | — | — |
| 2005 | 76° | 51° | 63° | — | — |
| 2004coldest | 70° | 36° | 53° | — | — |
| 2003 | 81° | 70° | 75° | — | — |
| 2002 | 74° | 50° | 62° | — | — |
| 2001 | 68° | 56° | 62° | — | — |
| 2000 | 68° | 55° | 62° | — | — |
| 1999 | 66° | 55° | 61° | — | — |
| 1998 | 70° | 63° | 66° | — | — |
| 1997 | 60° | 55° | 58° | — | — |
| 1996 | 69° | 58° | 63° | — | — |
| 1995 | 76° | 60° | 68° | — | — |
| 1994 | 69° | 57° | 63° | — | — |
| 1993 | 68° | 60° | 64° | — | — |
| 1992 | 68° | 55° | 62° | — | — |
| 1991 | 73° | 55° | 64° | — | — |
| 1990 | 64° | 56° | 60° | — | — |
| 1989 | 66° | 57° | 62° | — | — |
| 1988 | 64° | 59° | 62° | — | — |
| 1987 | 78° | 60° | 69° | — | — |
| 1986 | 73° | 60° | 67° | 3.78" | — |
| 1985 | 62° | 48° | 55° | — | — |
| 1984 | 77° | 65° | 71° | 0.18" | — |
| 1983 | 69° | 60° | 65° | — | — |
| 1982 | 78° | 62° | 70° | — | — |
| 1981 | 70° | 62° | 66° | — | — |
| 1980 | 70° | 64° | 67° | 1.27" | — |
| 1979 | 60° | 57° | 59° | — | — |
| 1978 | 77° | 56° | 66° | — | — |
| 1977 | 60° | 53° | 57° | 0.08" | — |
| 1976warmest | 90° | 74° | 82° | — | — |
| 1975 | 63° | 58° | 60° | — | — |
| 1974 | 84° | 63° | 73° | 0.03" | — |
| 1973 | 76° | 56° | 66° | — | — |
| 1972 | 67° | 59° | 63° | 6.65" | — |
| 1971 | 77° | 60° | 69° | — | — |
55 years of data from DULUTH HARBOR STN