Cold tonight, frost advisory in effect for parts of the Northland; Warmer times ahead with highs in the 70s and 80s into early next week; 24-Hour Rainfall Reports and Rainfall Anomalies for May 2023

4:50 PM Wednesday, May 24, 2023

Another drastic change in temperatures occurred near Lake Superior between late Tuesday afternoon and today.

Temperatures this afternoon have been running -30 to nearly -50 degrees colder compared to the temperatures we saw near Lake Superior Tuesday afternoon.

Wind chills (feels like temperatures) have been running in the upper 20s and lower 30s in the Twin Ports throughout the day today.

Note: It was 87 degrees in Superior at 4:30 PM Tuesday. Fast forward 24 hours to 4:30 PM today, and the temperature was 38 degrees! A difference of nearly 50 degrees in 24-hours.

Frost Advisory in effect late tonight until 7 AM Thursday for parts of northeast Minnesota and northwest Wisconsin.

*Temperatures as low as 31 to 34 degrees will result in frost formation.

*Freezing temperatures are not expected along the immediate coastline of Lake Superior.


Portions of north central Minnesota received some rain Tuesday afternoon through today, and there’s also been a persistent area of mostly light rain showers/drizzle affecting portions of eastern Minnesota and northern Wisconsin today, but this rain hasn’t amounted to much.

24-Hour Rainfall Reports from May 23-24, 2023
Source: MesoWest

Note — Totals below are for the 24-hour period ending at 5 PM on the 24th.

Longville, MN: 0.40″
Walker, MN: 0.36″
Bigfork, MN: 0.35″
Hayward, WI: 0.21″
Grand Rapids, MN: 0.20″
Deer River, MN: 0.20″
Hill City, MN: 0.19″
Pine River, MN: 0.18″
International Falls, MN: 0.18″
McGregor, MN: 0.17″
Aitkin, MN: 0.17″
Brainerd, MN: 0.12″
Cass Lake, MN: 0.11″
Minong, WI: 0.09″
Cloquet, MN: 0.05″
Moose Lake, MN: 0.02″
Superior Airport: 0.02″
Solon Springs, WI: 0.02″
Webb Lake, WI: 0.02″
Duluth Airport: 0.01″

We’ve seen an area of light rain and drizzle move SE through parts of eastern Minnesota and northwest Wisconsin this afternoon, but this area of rain will continue to diminish this evening.

Radar loop ending 6:03 PM Wednesday, May 24, 2023.

Looks mostly dry in northeast Minnesota and northwest Wisconsin into at least early next week with all the rain staying well to the west and north thanks to an upper-level ridge over the Great Lakes.

Rainfall anomalies for May 2023 (thru 4 PM on the 24th)

Ashland, WI: -2.30″ below normal
Duluth, MN: -1.75″ below normal
Hibbing, MN: -1.28″ below normal
Brainerd, MN: -1.20″ below normal
International Falls, MN: -0.18″ below normal


Note — Highs in northeast Minnesota and northwest Wisconsin will be in the 60s and 70s on Thursday with cooler 40s and 50s near Lake Superior as east winds continue, but those winds on Thursday should be somewhat lighter with gusts to around 20 mph compared to the gusts of around 30 to 50 mph we saw last evening into today. Sunshine should also become more abundant across the Northland on Thursday. Highs Friday through Sunday are forecast to range from the 70s to lower 80s, with some parts of the Northland getting into the middle 80s early next week. Temperatures closer to Lake Superior could be somewhat cooler Friday through early next week if winds happen to have more of an easterly component to them, but if a lake wind occurs it should be fairly light with the cooler air not moving very far inland the way it looks now.

The lake cooled air (off Lake Superior) extended pretty far to the west and south today, but much warmer temperatures continued in western and southern Minnesota today and this warmth will start to push back to the northeast over the next few days.


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