Showers and thunderstorms return to forecast; heat builds in Tuesday
Improving air quality to start the week
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Showers and thunderstorms remain possible into early Monday morning and again in the afternoon, but conditions will quickly turn hot and humid as a ridge of heat builds in by Tuesday. A classic midsummer pattern takes hold, with rising dew points and heat indices climbing into the 90s—and possibly reaching the triple digits—through much of the week.
Overnight lows will dip into the 60s for most, with a few spots in northeastern Minnesota cooling into the mid-50s under partly cloudy skies.
Storms are expected to develop overnight in the Dakotas and track east-southeast into Minnesota during the early morning hours. However, forecast models still show some disagreement on whether these storms will hold together or weaken into areas of light rain by the time they reach the Twin Cities. Forecast models show additional development of storms after a lull from the early convection.
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Temperatures for Monday remain slightly below average in the upper 70s to low 80s.
Dew points will noticeably rise this week, climbing back into the upper 60s and 70s.
Air quality alert ending
The air quality alert for the northern third of the state will end at 9 a.m. Monday. Smoky and hazy skies continued across northern Minnesota on Sunday, but a shift in the wind pattern to start the workweek should help keep wildfire smoke to our north.
Check the latest air quality conditions, alerts and forecast here:
MPCA website Current air quality conditions
MPCA website: Air quality forecasts
The Dog Days of Summer are ahead this week, bringing hot and humid conditions. Heat indices are expected to climb into the 90s, with the potential for triple-digit values by Tuesday and Wednesday.
A heat dome building over the Central Plains will create a “ring of fire” pattern, with storms developing along its edges. This setup means we can expect daily chances of showers and thunderstorms throughout the week.
Tuesday will be the day to watch weather-wise, with a slight risk of severe storms and excessive rainfall. Some areas could see impressive rainfall amounts.
