Cold First Half of October in the Twin Cities
The first half of October was more like the first half of November in Minnesota. From October 1 to 15 the average temperature was 41.8 degrees in the Twin Cities, which is 10.7 degrees below normal. Using records going back to 1891, this is the coldest first half of October on record in the Twin Cities. The previous coldest October 1-15 was 43.5 degrees in 1917.
It was the cool maximum temperatures that really made the first half of October seem so chilly. The normal high for October 1 in the Twin Cities is 65 degrees, cooling to 58 degrees by October 15.
Below is a Public Information Statement from the Chanhassen National Weather Service on the cold October.
CLIMATE REPORT...CORRECTED 5TH WETTEST... NATIONAL WEATHER SERVICE CHANHASSEN MN 400 AM CDT FRI OCT 16 2009 A RECORD COLD...WET AND SNOWY TWO WEEKS IN OCTOBER FOR THE TWIN CITIES. THE NORMAL HIGH TEMPERATURE FOR THE FIRST 2 WEEKS IN OCTOBER IS 63. THIS YEAR THE HIGH TEMPERATURE WAS 47 DEGREES. THAT IS THE COLDEST FIRST 2 WEEKS OF OCTOBER ON RECORD. THE PREVIOUS COLDEST WAS 52 DEGREES IN 1875. THE MOST RECENT COLD WAS 54 DEGREES IN 1979. THE NORMAL LOW TEMPERATURE FOR THE FIRST 2 WEEKS IN OCTOBER IS 42. THIS YEAR THE LOW TEMPERATURE WAS 36 DEGREES. THAT IS NUMBER 10 COLDEST. TIED WITH 1985...1987...AND 1993. IT WAS THE 5 TH WETTEST FIRST 2 WEEKS IN OCTOBER. SO FAR IT IS THE 7TH SNOWIEST FULL OCTOBER. THE SNOWIEST OCTOBER IS...1991 HALLOWEEN SNOW STORM...WITH 8.2 INCHES. MISERY LOVES COMPANY...THE TWIN CITIES IS NOT STANDING ALONE IN THE COLD RAIN. ST CLOUD MINNESOTA AND EAU CLAIRE WISCONSIN SHARED THE RECORD COLDEST HIGH TEMPS.