Showers and storms sweeping northeast; humidity building

A long line of thunderstorms, trailed by a broad area of rain, has been speeding northeast across Minnesota as Independence Day gets underway.

Weather radar at 9:00A Monday
Weather radar at 9:00A Monday
Twin Cities National Weather Service

Heat and humidity building

July heat and humidity will build through the Fourth of July holiday. Look for afternoon high temperatures from the 70s in the north to near 90 southwest, but much cooler near Lake Superior. Most of the state should have highs in the 80s.

The rain should end across the Twin Cities area by early afternoon. Then look for highs in the mid to upper 80s with the dew point approaching a swampy 70.

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Potential for redevelopment

How the thunderstorm situation will play out the rest of the day is a bit of a question mark. The morning storms and rain will stabilize the atmosphere at least temporarily. But popup thunderstorms with the heating of the day, fueled by the elevated dew points, are likely, mainly north of the Twin Cities area. As posted by the Storm Prediction Center, some storms could become severe. The yellow area is for a slight risk (level 2 of 5) for severe weather. The dark green is a lesser marginal risk. Any storms that develop should fade away by fireworks time, except maybe lingering locally in the Arrowhead.

Updated severe weather outlook for Monday
Updated severe weather outlook for Monday
NOAA Storm Prediction Center

Unsettled week

Much of the upcoming week will bring typical July weather:  heat and humidity, along with widely scattered showers and thunderstorms most days. But the risk of severe weather will shift southward. The slight risk of severe storms on Tuesday and Tuesday night will stretch from Montana to Maryland. Note that it does include much of southern Minnesota.

Severe weather outlook for Tuesday-Tuesday night
Severe weather outlook for Tuesday-Tuesday night
NOAA Storm Prediction Center

More of the same for Wednesday

For Wednesday and Wednesday night, the slight risk is posted from Nebraska and just about all of Iowa to North Carolina.

Severe weather risk for Wednesday-Wednesday night
Severe weather risk for Wednesday-Wednesday night
NOAA Storm Prediction Center

Typical July heat

Statewide high temperatures should be mainly in the 80s for most of Minnesota for much of the upcoming week. Exceptions will be cooler highs in the 70s in the northeast and some toasty low 90s in the southwest.

Heating up next weekend

If highs in the 80s aren’t quite enough for you, next Sunday might just be the ticket with central and southern Minnesota maybe heating into the low 90s.

Forecast high temperatures for Sunday
Forecast high temperatures for Sunday
NOAA Weather Prediction Center