Minnesota Climate Extremes

Maximum115 deg. F. *   July 29, 1917BeardsleyBig Stone
Minimum-60 deg. F.February 2, 1996near TowerSt. Louis
Maximum 24-hour change72 degrees F.February 2, 1970Nett LakeKoochiching
Maximum 24-hour change (old record)71 degrees F.April 3, 1982LambertonRedwood
Maximum 24-hour snowfall36.0 inchesJanuary 7, 1994near FinlandLake
Maximum single storm snowfall46.5 inchesJanuary 6-8, 1994near FinlandLake
Maximum seasonal snowfall170.5 inches1949-1950near Grand PortageCook
Maximum snow cover75 inchesMarch 28, 1950near Grand PortageCook
Earliest measurable snowfall0.3 inchesSept. 14, 1964International FallsKoochiching
Latest measurable snowfall1.5 inchesJune 4, 1935MizpahKoochiching
Maximum 24-hour total15.10 inchesAugust 19, 2007HokahHouston
Maximum monthly total23.86 inchesAugust 2007HokahHouston
Maximum annual total56.24 inches2016WasecaWaseca
Minimum annual total6.37 inches1976OrtonvilleBig Stone
Longest dry spell79 days11/9/43 - 1/26/44Beardsley, Canby,
Marshall, Dawson
Maximum measured gust121 mphSeptember 1, 2011DonaldsonKittson
Maximum31.17 inchesFebruary  17, 1989International FallsKoochiching
Minimum28.21 inchesOctober 26, 2010BigforkItasca

What was the coldest wind chill temperature ever recorded in Minnesota? The answer can be tricky because the National Weather Service began to use a modernized wind chill formula in November 2001. Perhaps the coldest wind chill the Twin Cities has ever seen was -63 with the new formula (-77 with the old formula) back on January 22nd 1936. The temperature was -34 with a wind speed of 15 mph. Without a lengthy state-wide wind record, it is difficult to say when was the coldest statewide wind chill. There are some candidate dates though besides January 22, 1936. On January 9th and 10th, 1982 temperatures of -30 and winds of around 40 mph were reported in Northern Minnesota. This would translate to -71 by the new formula (-100F by the old formula.)

What about the highest heat index ever reached in the Twin Cities or Minnesota? The heat index is a "feels like" measure which factors together temperature and dew point. The highest heat index value ever recorded in the Twin Cities is believed to be 119 degrees, occurring on July 11, 1966 (our thanks to climate historian Charles Fisk). For Minnesota, an air temperature of 97 degrees teamed with an 84 degree dew point to create a heat index value of 127 degrees at the Red Wing airport at 3:00 pm on July 30, 1999.

* The maximum high temperature record for Minnesota was amended by the National Climatic Data Center. The record, previously cited as 114.5 degrees F at Beardsley, was rounded to 115 degrees.


Climate Extremes Information from the National Climatic Data Center


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