Summer-like heat locks in over the Northern Plains, Upper Midwest after cold start to May
High temperatures on Tuesday and Wednesday are forecast to climb 10 to 20 degrees above average from the Northern Plains through the Upper Midwest and Great Lakes.
Summer-like heat locks in over the Upper Midwest, Northern Plains
Summer-like temperatures have reached the Upper Midwest and the Northern Plains for the first time this year. After a cooler-than-average start to May, temperatures will climb into the 80s and 90s across the region. Beyond this week, long-range forecasts show the warmth sticking around through the beginning of June.
While it's been an exceptionally warm spring for much of the Lower 48 – specifically across the West and Southeast—two regions in particular have remained cooler than average: the Northern Tier and Upper Midwest.
(FOX Weather)
That is all about to end as temperatures are forecast to run up to 20 degrees above average into Tuesday and Wednesday, leaving Minneapolis eyeing its first 90 degree day since October 2025.
According to the FOX Forecast Center, May has featured the largest temperature anomalies of the season across this region.
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Cities like Minneapolis, Green Bay and Detroit, which recently saw low temperatures in the 30s, are now expected to surge into summer-like warmth through midweek.
(FOX Weather)
High temperatures on Tuesday and Wednesday are forecast to climb 10 to 20 degrees above average from the Northern Plains through the Upper Midwest and Great Lakes.
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In fact, Minneapolis could flirt with 90 degrees on Tuesday, which would mark the city’s warmest temperature since last October.
While a few record highs may be possible across the Northern Plains early next week, the FOX Forecast Center highlights a bigger shock bring shock being the rapid transition to the summer-like heat.
(FOX Weather)
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"The warmer air is also a good reminder that, despite the heat, water temperatures remain chilly, generally in the middle to lower 50s," they said.
Through early June, long-range outlooks from the Climate Prediction Center continue to show much of the Northern Tier remaining above average after a chillier start to May.