2nd Coldest Summer at International Falls, MN

2009 Goes down as 2nd Coldest Summer on Record for International Falls.

The end of meteorological summer, June 1st through August 31st, ended on a cool note. International Falls, MN recorded its second coolest summer on record, with an average temperature of only 59 degrees F. This is 4.8 deegrees below the 30-year climate normal

The summer of 2009 in Duluth will be remembered as a cool one, but not record setting. The average temerature was 61 degrees F; 2 degrees below the 30-year climate normal and a far reach from he all time coolest summer, 1915, where an average temperature 58.2 degrees was recorded.

Cold Nights and Record Lows in August

Though August was warmer than the previous July, the average monthly temperature for the month in International Falls was 60.3 degrees, or 3.5 degrees below the 30-year climate normal.

The average monthly temperature in Duluth was 62.2 degrees, which is 1.5 degrees below the 30-year climate normal. August of 2009 came in 3.3 degrees warmer than the average temperature in August 2004 which holds the 5th coldest August ever observered in Duluth.

Duluth set a record daily low temperature on August 30th, bottoming out at 38 degrees. This broke the previous record of 39 degrees that was set in 1988.

Ten new daily record lows were set this summer at International Falls, MN including several in August. On August 29th and August 30th, International Falls saw the thermometer drop to 34 and 32 degrees respectively, breaking the old records of 35 degrees on both days set in 2007. This also made the second of only two times the International Falls record books have seen a day in August that have reached 32 degrees or less.  Also impressive during this cold snap was Embarrass, MN coming in with an early morning low temperatures of 27 and 28 degrees F on the 29th and 30th of August.

The only 80 degree days occurred during a five day stretch from August 11th to August 15th. The thermometer peaked at 85 degrees on the 12th in Duluth, and 89 degrees at International Falls. There have been zero 90 degrees days at either location this summer.

While International Falls received only 2.54 inches of precipitation in August 2009, 0.60 inches below normal, Duluth came in with 6.02 inches of precipitation, 1.80 inches above normal. For the year, since January 1st, both locations remain below normal for precipitation. Duluth set an impressive record daily maximum rainfall record of 2.89 inches on August 19th, breaking the long-standing old record of 1.56 inches set in 1884.

For more details, please refer to the Local Climate Page.

September Climate Outlook




























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