Updraft® - Minnesota Weather News

A January thaw, then winter's coldest air mass early next week?

Temps in the 30s Thursday, Friday; Twin Cities may see minus 15 Monday

Temperatures Wednesday afternoon
Temperatures Wednesday afternoon
Oklahoma Mesonet

Get ready for the most dramatic temperature swing of winter in Minnesota.

Our well-advertised January thaw arrived Wednesday afternoon in western Minnesota, where temperatures hit 39 degrees in Madison. I saw 38 degrees in Granite Falls, Canby, and Marshall.

You can see temperatures in the 40s in the Dakotas on the national temperature map above. And check out the air mass transition as temperatures soared in the Twin Cities Wednesday:

Temperatures Wednesday at MSP Airport
Temperatures Wednesday at Minneapolis-St. Paul International Airport
National Oceanic and Atmospheric Administration / Federal Aviation Administration

Temperatures will be steady to slowly rising into the 30s as our Pacific air mass blows in Wednesday night. Highs Thursday will reach the 30s across much of Minnesota.

Friday brings the warmest day of our 2024 January thaw. Highs will reach well into the 30s to around 40 degrees in the south.

Forecast high temperatures Friday
Forecast high temperatures Friday
NOAA

Arctic front Friday night

Our late-week thaw is not long for Minnesota. A swiftly moving arctic front will slam through Minnesota Friday night.

On the map below, watch as the National Oceanic and Atmospheric Administration’s Global Forecast System temperature output model slams subzero air into Minnesota From Saturday night into Tuesday morning.

NOAA GFS temperature output
Global Forecast System temperature output between noon Friday and 6 a.m. Tuesday
NOAA, via Tropical Tidbits

Temperatures with this arctic outbreak will reach minus 10 to minus 15 around the Twin Cities. It will plunge to minus 20s to around minus 30 degrees in the coldest nooks of the north.

The coldest morning will likely be Monday. Temperatures may approach minus 15 degrees in the Twin Cities:

Forecast low temperatures Monday
Forecast low temperatures Monday
NOAA

We’re almost certain to blow past the coldest temperature so far in the Twin Cities this winter of minus 9 degrees Tuesday morning. We’re not done with subzero cold in Minnesota after next week, but it could be the coldest air mass of winter.

Enjoy the ride!