Updraft® - Minnesota Weather News

Steamy September weekend continues: 90 degrees in the south with tropical dew points

Temperatures running 10 to 15 degrees warmer than normal this weekend.

Forecast high temperatures Sunday
Forecast high temperatures Sunday.
NOAA

We’re getting another taste of summer in Minnesota on this mid-September weekend.

Minnesota is riding the northern edge of an unseasonably warm and humid summerlike air mass. Temperatures in the 90s oozed into southwest Minnesota Saturday afternoon.

Temperatures
Temperatures Saturday afternoon.
Oklahoma Mesonet

And dew points have reached tropical levels. I see dew points in the 70s across much of southern Minnesota.

Here are some select dew point readings Saturday afternoon.

  • Ortonville, Benson 70 degrees

  • Mankato 71 degrees

  • Austin, Willmar 72 degrees

  • Owatonna 73 degrees

  • Preston 75 degrees!

The higher dew points add to heat index values around our region.

Heat index forecast
Heat index values Saturday afternoon.
Oklahoma Mesonet

Steamy Sunday

Sunday will bring another unseasonably hot and humid day. Look at the tropical dew point pool washing across most of southern Minnesota through Sunday. Dew points in the mid-70s may reach the Twin Cities Sunday afternoon!

NOAA NAM 3 km model dew points
NOAA NAM 3 km model dew points between 4 p.m. Saturday and 7 p.m. Sunday.
NOAA via tropical tidbits

Highs Sunday will push into the upper 80s to near 90 once again across southern Minnesota.

Forecast high temperatures Sunday
Forecast high temperatures Sunday.
NOAA

And the warmth will persist through much of next week. We’ll have a better chance for scattered rain and thunderstorms between next Tuesday and Thursday.

It looks like a cold front late next week could bring cooler temperatures to Minnesota with highs in the 50s north to 60s south. But overall the weather pattern looks mild the next 1-2 weeks. NOAA’s 8 to 14-day outlook favors warmer than normal temperatures overall as we move into late September.

NOAA 8 to 14-day temperature outlook
NOAA 8 to 14-day temperature outlook.
NOAA

Enjoy our extended bonus summer weather.