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 | 100.9°F (38°C) | July 15, 2006 and July 28, 2006 |
| Record Low | -36.9°F (-38°C) | January 15, 1972 and February 2, 1996 |
| Lowest High | -20.9°F (-29°C) | January 16, 1982 |
| Highest Low | 77°F (25°C) | July 13, 2026 |
| Highest Mean | 87.0°F (31°C) | July 13, 2026 |
| Lowest Mean | -28.4°F (-34°C) | January 15, 1972 |
| Precipitation | ||
| Max in One Calendar Day | 4.38" (111.3 mm) | June 20, 2012 |
| Max in One Month | 12.24" (310.9 mm) | June 2012 |
| Least in One Month | 0.00" (0.0 mm) | March 2026 |
| 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 | 91.4" (232.1 cm) | 1996-97 |
| Max in One Year | 96.3" (244.7 cm) | 1991 |
| Earliest Snow | 2.0" (5.1 cm) | October 16, 1992 |
| Earliest Measurable Snow | 2.0" (5.1 cm) | October 16, 1992 |
| Latest Snow | 0.8" (2.0 cm) | May 5, 1989 |
| Latest Measurable Snow | 0.8" (2.0 cm) | May 5, 1989 |
| Period of Record | ||
| Temperature | January 1, 1970 – August 1, 2026 | |
| Precipitation | January 1, 1970 – August 1, 2026 | |
| Snowfall | January 1, 1970 – August 1, 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 100.9°F (38°C), set on July 15, 2006 and July 28, 2006.
What is the coldest temperature ever recorded in Duluth, MN?
The all-time record low in Duluth, MN is -36.9°F (-38°C), set on January 15, 1972 and February 2, 1996.
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 4.38 inches, on June 20, 2012.
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
Monthly averages, records, and climate data for Duluth
Minnesota Weather Extremes
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