September was the sunniest on record in Twin Cities and Minnesota

Last month was also the warmest and driest September on record.

The Minnesota Star Tribune
October 7, 2024 at 12:35PM
Lines Only-Tennis Ali Fry...Matt Tennant — Ali Fry, returns a ball to Matt Tennant both of Minneapolis during a friendly game of tennis at Kennwood park in Minneapolis on Wednesday afternoon. The two were making the most of the sunny weather which cast shadows on the players.
Not only was last month the warmest and driest on record in the Twin Cities, last month turned out to be the least cloudy September on record and one of the clearest months of all time. (STAR TRIBUNE/The Minnesota Star Tribune)

Not only was last month the warmest and driest on record in the Twin Cities, last month turned out to be the least cloudy September on record and one of the clearest months of all time.

Brian Brettschneider, a climatologist in Alaska, released a graphic over the weekend ranking the United States from most to least cloudiest and found that in September the sun shined in Minnesota and much of Wisconsin more than any place in the country.

“For Minnesota, not only was it a record for least cloudy September, it was a record for least cloudy month overall,” he posted on X.

Brettschneider used data from 1950 to the present in his analysis.

The Twin Cities saw 18 days last month with clear skies, another 11 with partly cloudy conditions — meaning more sun than clouds, and just one day with cloudy skies, according to the Minnesota State Climatology Office.

On the other end of the scale, Florida, known as the Sunshine State, and pockets of the Pacific Northwest saw the most clouds last month, Brettschneider found.

With abundant sunshine, temperatures in Minnesota were warmer than normal in September. In the Twin Cities, the mercury hit or surpassed 80 degrees 19 times during the month, the Climatology Office said. That helped push the average monthly temperature to 70.4 degrees, making it the warmest September since 1873, when weather record-keeping began.

An absence of clouds also led to a lack of rain. Just 0.06 inches of rain fell during the month, which made it the driest September on record, the Climatology Office said.

No umbrellas will be needed this week, but you will need sunglasses as more warm and dry weather is on the way. High temperatures will be in the low 70s Monday and Tuesday, the mid 70s on Wednesdays and low 80s by Thursday, according to the National Weather Service.

Cooler weather — upper 60s Saturday and low 60s Sunday —and a few clouds arrive for the weekend, the Weather Service said. As for rain, not a drop is predicted, according to the Weather Service’s weekly forecast.

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about the writer

Tim Harlow

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Tim Harlow covers traffic and transportation issues in the Minneapolis-St. Paul area, and likes to get out of the office, even during rush hour. He also covers the suburbs in northern Hennepin and all of Anoka counties, plus breaking news and weather. 

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