Weather on May 18
Duluth, MN
55 Years of Data
Avg High
58°F
Avg Low
42°F
Warmest
1984
68°F avg
Coldest
2002
32°F avg
About This Date
May 18th in Duluth, MN typically brings cool spring weather, with average highs around 58°F and lows near 42°F. Over 55 years of records, the warmest May 18th was in 1984 (68°F average), while the coldest was 2002 (32°F) — a 36°F range across recorded history. Rain or other precipitation has occurred on about 24% of May 18th dates historically, with the wettest May 18th recording 2.24" of rain. The last decade has been 2.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.8°F warmer on this date compared to 20-30 years ago.
Planning for May 18th in Duluth, MN? Bring layers as temperatures can vary throughout the day.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 46° | 39° | 43° | — | — |
| 2024 | 78° | 43° | 60° | 0.43" | — |
| 2023 | 63° | 37° | 50° | 0.25" | — |
| 2022 | 53° | 40° | 46° | 0.61" | — |
| 2021 | 66° | 50° | 58° | — | — |
| 2020 | 49° | 44° | 46° | — | — |
| 2019 | 43° | 38° | 40° | 2.24" | — |
| 2018 | 47° | 40° | 43° | — | — |
| 2017 | 54° | 41° | 47° | 0.51" | — |
| 2016 | 66° | 39° | 53° | — | — |
| 2015 | 52° | 37° | 44° | 0.18" | — |
| 2014 | 76° | 40° | 58° | — | — |
| 2013 | 45° | 38° | 41° | 1.27" | — |
| 2012 | 82° | 49° | 65° | — | — |
| 2011 | 52° | 41° | 46° | — | — |
| 2010 | 58° | 42° | 50° | — | — |
| 2009 | 76° | 45° | 60° | 0.03" | — |
| 2008 | 66° | 42° | 54° | — | — |
| 2007 | 78° | 45° | 61° | 1.02" | — |
| 2006 | 66° | 46° | 56° | — | — |
| 2005 | 44° | 40° | 42° | 1.91" | — |
| 2004 | 52° | 40° | 46° | — | — |
| 2003 | 47° | 36° | 41° | — | — |
| 2002coldest | 43° | 21° | 32° | — | — |
| 2001 | 73° | 48° | 61° | — | — |
| 2000 | 65° | 42° | 53° | — | — |
| 1999 | 69° | 37° | 53° | — | — |
| 1998 | 59° | 47° | 53° | — | — |
| 1997 | 40° | 34° | 37° | — | — |
| 1996 | 46° | 34° | 40° | — | — |
| 1995 | 73° | 47° | 60° | — | — |
| 1994 | 49° | 42° | 45° | — | — |
| 1993 | 56° | 43° | 49° | 0.03" | — |
| 1992 | 64° | 42° | 53° | — | — |
| 1991 | 42° | 37° | 40° | — | — |
| 1990 | 59° | 39° | 49° | — | — |
| 1989 | 47° | 41° | 44° | — | — |
| 1988 | 49° | 41° | 45° | — | — |
| 1987 | 45° | 40° | 42° | — | — |
| 1986 | 54° | 42° | 48° | — | — |
| 1985 | 61° | 40° | 50° | — | — |
| 1984warmest | 79° | 57° | 68° | — | — |
| 1983 | 59° | 44° | 52° | — | — |
| 1982 | 65° | 43° | 54° | 1.78" | — |
| 1981 | 52° | 39° | 45° | — | — |
| 1980 | 79° | 45° | 62° | — | — |
| 1979 | 64° | 56° | 60° | — | — |
| 1978 | 85° | 47° | 66° | — | — |
| 1977 | 55° | 39° | 47° | — | — |
| 1976 | 54° | 41° | 47° | — | — |
| 1975 | 73° | 56° | 64° | — | — |
| 1974 | 44° | 37° | 41° | — | — |
| 1973 | 48° | 41° | 45° | — | — |
| 1972 | 50° | 37° | 44° | — | — |
| 1971 | 44° | 37° | 41° | 0.05" | — |
55 years of data from DULUTH HARBOR STN