Weather smorgasbord: Crisp nights, rain and summery afternoons ahead

Fall-like temperatures give way to a (last?) blast of summer this weekend. Frost is possible in northern Minnesota next week.

Forecast high temperatures Sunday
Forecast high temperatures Sunday.

‘Tis the season.

September in Minnesota brings many things. School again. Football. The last blasts of summery warmth. Frost, and even a few… snowflakes… up north?

All of those things look possible to likely in Minnesota over the next 10 days.

Our Wednesday air mass looks delightful across Minnesota. We’ll start out with a relatively crisp morning up north Wednesday. Lows will dip into the 40s across most of northern Minnesota. Good sleeping weather visits southern Minnesota where temperatures will dip to near 50 degrees Wednesday morning.

Forecast minimum temps Wednesday
Forecast minimum temps Wednesday.

Wednesday afternoon will be nothing short of spectacular across Minnesota. Highs in the 70s and dew points in the comfortable 40s are nearly ideal for most of us.

Forecast high temperatures Wednesday
Forecast high temperatures Wednesday.

Next rain Thursday and Friday

Our next rainmaker slides into Minnesota Thursday and Friday. The Canadian model is typical of models that show a trend of scattered rain and thunder shifting gradually eastward across Minnesota Thursday and Friday.

Canadian model Thursday into Friday
Canadian model Thursday and Friday.
Environment Canada via tropical tidbits

It won’t rain all the time Thursday and Friday. Rainfall totals look patchwork again, with many areas picking up between 0.5 and 1 inch of rainfall by Saturday.

Here’s the Europen model rainfall output through Friday.

European model (ECMWF) rainfall forecast
European model (ECMWF) rainfall forecast through Friday.
ECMWF via pivotal weather

Last taste of summer this weekend?

The last weekend of astronomical summer looks more July than late September. Highs will reach the 70s in most areas Saturday, with 80s across a good chunk of Minnesota Sunday.

Forecast high temperatures Sunday
Forecast high temperatures Sunday.

September’s other, colder weather shoe next week?

Next week starts mild, but forecast models crank up a potent system that looks likely to produce rain, then sweep in much colder air behind the system by next Wednesday and Thursday.

Highs may not climb out of the 40s and 50s by next Wednesday and Thursday. And some models suggest lows in the 30s, with frost possible in parts of northern Minnesota by next Thursday morning.

Forecast temps at 7 am Thursday September 23
Forecast temps at 7 a.m. Thursday, Sept. 23.
NOAA via tropical tidbits

Stay tuned.

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