Record Warm September 2015

Another Balmy September Day
Another Balmy September Day
Courtesy: Minnesota State Climatology Office

 

For those who chose to do outdoor activities in the fall, September cooperated for the most part with the warmest September on record statewide.

September 2015 was the warmest September on record for the State of Minnesota for records going back to 1895. The preliminary statewide average temperature was 65.1 degrees or 5.8 degrees above the 1981-2010 normal. The old record was 63.0 degrees in September 1897. The warm September was mainly driven by warm overnight minimum temperatures.

The overall weather pattern for September was summer-like with wind patterns favoring warm moist air from the south and few Canadian cold fronts. Fall penology for leaf color seems to be delayed about a week.

Below is a table showing how individual cities ranked for average temperatures in September 2015.

 


City        Ave   Dep from   Rank
            Temp  Normal    
--------------------------------------
Twin Cities  67.9  +5.9     4th warmest
St. Cloud    64.8  +6.2     4th warmest
Duluth       61.5  +5.9     warmest
Int. Falls   59.0  +5.4     5th warmest
Rochester    66.2  +5.3     2nd warmest
La Crosse    69.3  +6.5     warmest
Sioux Falls  67.1  +5.8     3rd warmest (tie)
Fargo        65.6  +6.5     warmest
 
Last modified: October 1, 2015

 

For more information contact: climate@umn.edu