Duluth, MN All-Time Weather Extremes
The most extreme temperature, precipitation, and snowfall ever recorded in Duluth, from NOAA daily weather observations.
| Temperature | ||
|---|---|---|
| Record High | 105°F (41°C) | July 14, 1936 |
| Record Low | -38°F (-39°C) | March 1, 1962 and February 12, 1967 |
| Lowest High | -20.9°F (-29°C) | January 16, 1982 |
| Highest Low | 80°F (27°C) | July 9, 1936 and August 9, 1949 |
| Highest Mean | 90°F (32°C) | July 9, 1936 |
| Lowest Mean | -28.4°F (-34°C) | January 15, 1972 |
| Precipitation | ||
| Max in One Calendar Day | 5.75" (146.1 mm) | July 1, 1958 |
| Max in One Month | 12.24" (310.9 mm) | June 2012 |
| Least in One Month | 0.00" (0.0 mm) | November 1916 |
| Max in One Year | 46.53" (1181.9 mm) | 1991 |
| Least in One Year | 14.89" (378.3 mm) | 1976 |
| Snowfall | ||
| Max in One Calendar Day | 18.0" (45.7 cm) | November 23, 1983 and February 24, 2001 |
| Max in One Month | 53.9" (136.8 cm) | November 1991 |
| Max in One Season | 103.0" (261.7 cm) | 1964-65 |
| Max in One Year | 96.3" (244.7 cm) | 1991 |
| Earliest Snow | 0.6" (1.5 cm) | October 9, 1917 |
| Earliest Measurable Snow | 0.6" (1.5 cm) | October 9, 1917 |
| Latest Snow | 0.5" (1.3 cm) | May 17, 1950 |
| Latest Measurable Snow | 0.5" (1.3 cm) | May 17, 1950 |
| Period of Record | ||
| Temperature | April 19, 1909 – May 4, 2026 | |
| Precipitation | January 1, 1909 – May 4, 2026 | |
| Snowfall | January 1, 1909 – May 4, 2026 | |
Note: Records compiled from NOAA GHCN-Daily observations at SUPERIOR (3 mi from Duluth, MN). Quality-flagged readings are excluded. Monthly and annual totals require substantially complete reporting for “least” records.
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Frequently Asked Questions
What is the hottest temperature ever recorded in Duluth, MN?
The all-time record high in Duluth, MN is 105°F (41°C), set on July 14, 1936.
What is the coldest temperature ever recorded in Duluth, MN?
The all-time record low in Duluth, MN is -38°F (-39°C), set on March 1, 1962 and February 12, 1967.
What is the most rain Duluth, MN has ever had in one day?
The most precipitation recorded in one calendar day near Duluth, MN is 5.75 inches, on July 1, 1958.
What is the biggest snowfall ever recorded in Duluth, MN?
The most snow recorded in one calendar day near Duluth, MN is 18.0 inches, on November 23, 1983 and February 24, 2001.
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Duluth Weather History
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Minnesota Weather Extremes
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