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After a relatively mild stretch, subzero readings may return to Duluth Monday morning, with lows around -5°F possible. The city’s most recent subzero low occurred on February 7, when the temperature dipped to -6°F.
Cold air remains entrenched to our north, and as the upper‑level flow shifts back to the northwest we’ll draw some of that Arctic air into the region. That said, the coldest, most extreme air will stay well to our north through the week, so we’ll feel a chill but not the worst of the outbreak.
Temperatures from early Sunday evening reveal some impressive cold up north, with temperatures in the -20s, -30s, and even some -40s.
We currently have quite a pattern with two strong lows and one very strong high.
Of note, the low over the west Atlantic will rapidly deepen to around 972 mb/28.70 inches by Monday afternoon.
…Snow chances return this week…
With the return to a northwest flow aloft, the clipper pattern comes back — expect a fast‑moving clipper to pass through the Northland on Tuesday.
The clipper on Tuesday could have some pretty good lift (outlined in black on the map) with it, but the duration of the strongest lift looks fairly brief, and with this being a clipper, it won’t have access to the deep, rich moisture we saw during the blizzard last week.
This clipper looks to bring a light snow event to much of northeast Minnesota and northwest Wisconsin on Tuesday, with 1–2 inches expected for most areas. The Arrowhead could see 2–4+ inches where lake‑enhanced snow develops Monday night into Tuesday.
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