Weather on March 18
Duluth, MN
55 Years of Data
Avg High
36°F
Avg Low
22°F
Warmest
2010
50°F avg
Coldest
1989
11°F avg
About This Date
March 18th in Duluth, MN typically brings cold spring weather, with average highs around 36°F and lows near 22°F. Over 56 years of records, the warmest March 18th was in 2010 (50°F average), while the coldest was 1989 (11°F) — a 39°F range across recorded history. Precipitation has occurred on 16% of recorded March 18th dates, with snow falling 11% of the time (heaviest snowfall: 5"). The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
Planning for March 18th in Duluth, MN? Bundle up with warm layers and protect extremities from the cold.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 45° | 16° | 30° | — | — |
| 2025 | 35° | 24° | 30° | — | — |
| 2024 | 38° | 17° | 27° | — | — |
| 2023 | 29° | 13° | 21° | — | — |
| 2022 | 35° | 27° | 31° | — | — |
| 2021 | 39° | 31° | 35° | — | — |
| 2020 | 34° | 32° | 33° | — | — |
| 2019 | 44° | 21° | 33° | — | — |
| 2018 | 38° | 19° | 29° | — | — |
| 2017 | 34° | 27° | 30° | — | — |
| 2016 | 32° | 26° | 29° | — | — |
| 2015 | 40° | 29° | 34° | — | — |
| 2014 | 27° | 26° | 26° | 0.3" | 2" |
| 2013 | 31° | 19° | 25° | 0.71" | 5" |
| 2012 | 46° | 37° | 42° | — | — |
| 2011 | 40° | 27° | 33° | — | — |
| 2010warmest | 63° | 38° | 50° | — | — |
| 2009 | 54° | 25° | 39° | — | — |
| 2008 | 41° | 26° | 34° | 0.41" | 3" |
| 2007 | 40° | 14° | 27° | 0.28" | 3" |
| 2006 | 38° | 24° | 31° | — | — |
| 2005 | 28° | 15° | 22° | — | — |
| 2004 | 40° | 17° | 28° | — | — |
| 2003 | 36° | 29° | 32° | — | — |
| 2002 | 36° | 25° | 30° | — | — |
| 2001 | 36° | 14° | 25° | — | — |
| 2000 | 34° | 10° | 22° | — | — |
| 1999 | 41° | 23° | 32° | — | — |
| 1998 | 34° | 32° | 33° | — | — |
| 1997 | 33° | 16° | 24° | — | — |
| 1996 | 34° | 26° | 30° | — | — |
| 1995 | 34° | 29° | 31° | — | — |
| 1994 | 31° | 22° | 26° | — | — |
| 1993 | 28° | -3° | 13° | — | — |
| 1992 | 32° | 14° | 23° | — | — |
| 1991 | 36° | 32° | 34° | — | — |
| 1990 | 23° | 14° | 19° | — | — |
| 1989coldest | 19° | 4° | 11° | — | — |
| 1988 | 24° | 13° | 18° | — | — |
| 1987 | 37° | 33° | 35° | — | — |
| 1986 | 37° | 33° | 35° | 0.2" | — |
| 1985 | 47° | 23° | 35° | — | — |
| 1984 | 29° | 12° | 20° | — | — |
| 1983 | 32° | 30° | 31° | — | — |
| 1982 | 40° | 32° | 36° | 0.23" | 0.9" |
| 1981 | 34° | 22° | 28° | 0.03" | — |
| 1980 | 33° | 11° | 22° | — | — |
| 1979 | 36° | 33° | 34° | — | — |
| 1978 | 41° | 19° | 30° | — | — |
| 1977 | 34° | 15° | 24° | — | — |
| 1976 | 35° | 23° | 29° | — | — |
| 1975 | 42° | 32° | 37° | 0.03" | — |
| 1974 | 35° | 22° | 28° | 0.03" | 0.1" |
| 1973 | 34° | 19° | 26° | — | — |
| 1972 | 27° | 19° | 23° | — | — |
| 1971 | 34° | 23° | 28° | — | — |
56 years of data from DULUTH HARBOR STN