This month’s weather has mostly brought a northwest flow, sending bursts of cold air into the northern and eastern U.S., while much of the western U.S. has enjoyed milder conditions.
This month, average temperatures in northeast Minnesota and northwest Wisconsin have been running about 3 to 5 degrees below average.
International Falls, MN
Average: 7.7 degrees
Departure: -4.6 degrees below normal
Hibbing, MN
Average: 9.9 degrees
Departure: -2.8 degrees below normal
Duluth, MN
Average: 12.3 degrees
Departure: -5.3 degrees below normal
Brainerd, MN
Average: 12.9 degrees
Departure: -4.4 degrees below normal
Ashland, WI
Average: 15.9 degrees
Departure: -4.7 degrees below normal
Lowest temperatures recorded this month (up to the 28th)
Brainerd: -26 on the 14th
Hibbing: -23 on the 14th
International Falls: -23 on the 19th and 14th
Duluth: -16 on the 14th and 13th
Ashland: -12 on the 13th
Note: Duluth has had 12 subzero nights this month (up to the 28th), which is higher than the December average of 9. Last December, there were 6 subzero nights, and 2022 was the last year with at least 12 subzero nights in December.
In Duluth, December 2025 is running 7.7 degrees colder than December 2024.
This month in Duluth is ending with more colder-than-average days than warmer ones. We had a nice run of seven straight warmer-than-average days from the 22nd to the 28th, but that streak wraps up today, Monday, December 29.
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