Cool lake wind Tuesday (patchy fog/low clouds near Lake Superior) wet weather at times mid to late week

This past weekend’s storm which affected the Northland is over the northeast US today, with troughs covering portions of the southern US, and moving ashore into the Pacific northwest while an upper level ridge covered the upper Midwest into Ontario today.

Source: RAP model;

Tuesday will be another dry day in northeast Minnesota and northwest Wisconsin, but this will be followed by periods of rain from Wednesday afternoon through Friday evening, there is also a chance for a wintry mix of snow and freezing rain at times, especially Wednesday afternoon/evening, and again Thursday night and Friday.


Significant River Flood Outlook valid through April 4, 2020.

-Significant River Flooding is possible in yellow, likely in orange, and occurring in red.



Low temperature forecast for Tuesday morning, March 31, 2020. Source:

High temperature forecast for Tuesday, March 31, 2020.

…Weather Summary…

Partly cloudy skies will be found over the Northland tonight with lows in the teens and 20s, but a few single digits can’t be ruled out in the typical cold spots in northern Minnesota. Winds tonight will be out of the east around 10 mph.

Partly to mostly cloudy on Tuesday. Cool near Lake Superior with highs in the low to mid 30s while farther inland highs will reach the upper 40s to middle 50s. Winds will be out of the east or southeast at 10 to 15 mph. Note: Computer models are indicating the potential for areas of low clouds and or fog around Lake Superior on Tuesday due to the cool/humid flow coming off the lake.

Southerly flow increases on Wednesday as warm air and moisture advection moves into the upper Midwest ahead of a low pressure system which moves slowly east across the Northern Plains – There is a chance for some rain on Wednesday in northeast Minnesota and northwest Wisconsin, and there is a slight chance for a wintry mix of snow and freezing rain as well, but this will be dependent on boundary layer temps which look to be in the mid 30s to lower 40s Wednesday afternoon when some precipitation moves into the area.

Thursday and Friday look wet at times as a cold front moves slowly east across the area. Southerly flow ahead of this boundary will continue to pump a rather moist air mass into the region with precipitable water of around 0.75 to 1″. Periods of rain are expected Thursday into Friday. The best chance for rain Thursday will be over north-central Minnesota, then will see rain chances increase farther south/east from Thursday night into Friday. Note: Enough cooling may take place for the rain to mix with or change to snow or freezing rain across north-central Minnesota late this week with at least some potential for ice or snow accumulations.

For Duluth and Superior, most of the precipitation looks to be in the form of rain late Thursday through Friday.


Forecast for Duluth and Superior

.Tonight… Partly cloudy. Low 23 to 28. Wind east 10 to 15 mph.

.Tuesday… Partly to mostly cloudy. Patchy fog possible. High 32 to 37. Wind east 10 to 20 mph.

.Wednesday… Mostly cloudy. Some light rain possible in the afternoon. High 33 to 38. Wind east 10 to 20 mph.

Normal temperatures for March 31

High 41
Low 27

Sunrise Tuesday 6:49 AM CDT
Sunset Tuesday 7:37 PM CDT

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