Updraft® - Minnesota Weather News

Chilly, cloudy weather holds on as summer comes to an end

Fall equinox happens Tuesday at 7:05 p.m.

Frost advisory
Frost advisory
National Weather Service

Summer is officially winding down and the weather is already starting to feel a lot more like fall. We’ll have a chilly finish to the season, a chance for frost in northern Minnesota and some rain to keep things unsettled through parts of the week.

Cool end to summer

Summer is going out on a cool note across the region. Monday is the last day of astronomical summer, with the autumnal equinox arriving tomorrow, Tuesday, September 22 at 7:05 p.m. And the weather is already starting to feel more like fall, with below-normal temperatures, occasional rain and even a chance for frost in parts of the north Monday night.

A frost advisory is in effect from midnight through 8 a.m. Tuesday morning across the Northland, extending westward toward areas near Bemidji.

Frost advisory
Frost advisory
National Weather Service

As clouds clear Monday night, temperatures will be able to drop quickly. Some locations could fall into the upper 30s, creating favorable conditions for frost, especially in areas that see the skies clear out the fastest. The coldest conditions are expected across northeastern Minnesota and northwestern Wisconsin.

Lows for Monday night
Lows for Monday night
National Weather Service

The first day of fall will bring sunshine with Canadian high pressure nearby, but our temperatures will remain below average in the low to mid-60s. After a sunny but chilly Tuesday, we’ll see another chance for rain late Wednesday into Thursday.

Wednesday looks a little warmer, with highs climbing into the mid-60s. Rain chances will be highest across the Dakotas and western Minnesota, with a lower chance the farther east you go. Thursday stays fairly cloudy and cool, with a few lingering showers possible early in the day. Rain chances should drop off by Thursday afternoon.

High and low temperature map
High and low temperature chart
NOAA via WeatherBELL Analytics