Weather on August 15
Duluth, MN
55 Years of Data
Avg High
75°F
Avg Low
58°F
Warmest
1984
78°F avg
Coldest
1977
52°F avg
About This Date
August 15th in Duluth, MN typically brings pleasant summer weather, with average highs around 75°F and lows near 58°F. Over 55 years of records, the warmest August 15th was in 1984 (78°F average), while the coldest was 1977 (52°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 22% of August 15th dates historically, with the wettest August 15th recording 3.96" 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 August 15th in Duluth, MN? Great weather for outdoor activities.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 68° | 74° | 0.05" | — |
| 2024 | 67° | 62° | 64° | 2.41" | — |
| 2023 | 87° | 50° | 69° | — | — |
| 2022 | 63° | 58° | 60° | — | — |
| 2021 | 90° | 64° | 77° | — | — |
| 2020 | 80° | 61° | 70° | — | — |
| 2019 | 81° | 58° | 69° | — | — |
| 2018 | 72° | 62° | 67° | — | — |
| 2017 | 68° | 54° | 61° | — | — |
| 2016 | 81° | 62° | 71° | — | — |
| 2015 | 72° | 63° | 67° | — | — |
| 2014 | 84° | 57° | 71° | — | — |
| 2013 | 76° | 53° | 64° | — | — |
| 2012 | 70° | 56° | 63° | 0.25" | — |
| 2011 | 79° | 62° | 70° | — | — |
| 2010 | 65° | 57° | 61° | — | — |
| 2009 | 73° | 62° | 68° | 0.25" | — |
| 2008 | 73° | 55° | 64° | — | — |
| 2007 | 82° | 57° | 70° | — | — |
| 2006 | 81° | 52° | 66° | — | — |
| 2005 | 82° | 54° | 68° | — | — |
| 2004 | 78° | 43° | 60° | — | — |
| 2003 | 86° | 56° | 71° | — | — |
| 2002 | 80° | 53° | 67° | — | — |
| 2001 | 77° | 59° | 68° | — | — |
| 2000 | 71° | 65° | 68° | — | — |
| 1999 | 67° | 53° | 60° | — | — |
| 1998 | 80° | 60° | 70° | — | — |
| 1997 | 61° | 52° | 56° | — | — |
| 1996 | 70° | 56° | 63° | — | — |
| 1995 | 76° | 60° | 68° | — | — |
| 1994 | 75° | 53° | 64° | — | — |
| 1993 | 73° | 62° | 68° | 1.47" | — |
| 1992 | 73° | 53° | 63° | — | — |
| 1991 | 91° | 64° | 78° | — | — |
| 1990 | 82° | 60° | 71° | — | — |
| 1989 | 67° | 57° | 62° | — | — |
| 1988 | 81° | 67° | 74° | — | — |
| 1987 | 87° | 66° | 77° | 0.1" | — |
| 1986 | 79° | 60° | 69° | — | — |
| 1985 | 79° | 48° | 63° | — | — |
| 1984warmest | 87° | 68° | 78° | 0.03" | — |
| 1983 | 72° | 66° | 69° | — | — |
| 1982 | 72° | 59° | 65° | — | — |
| 1981 | 73° | 60° | 67° | — | — |
| 1980 | 68° | 60° | 64° | — | — |
| 1979 | 62° | 49° | 55° | — | — |
| 1978 | 70° | 64° | 67° | 1.14" | — |
| 1977coldest | 55° | 49° | 52° | 1.02" | — |
| 1976 | 68° | 54° | 61° | — | — |
| 1975 | 67° | 61° | 64° | 0.15" | — |
| 1974 | 77° | 53° | 65° | — | — |
| 1973 | 66° | 60° | 63° | 3.96" | — |
| 1972 | 68° | 52° | 60° | 2.41" | — |
| 1971 | 64° | 56° | 60° | — | — |
55 years of data from DULUTH HARBOR STN