National Weather Service United States Department of Commerce

Dangerous Heat Wave from the Midwest to East Coast

A large ridge of high pressure extending from the Central to Eastern U.S. will deliver a dangerous summer heat wave through the weekend. Widespread excessive heat warnings and heat advisories already cover the Eastern two-thirds of the country. A number of record highs and overnight warm minimum temperatures are likely. Heat indices will surge past 100 degrees and approach the 110s. Heat Safety! Read More >

2018 Annual Climate Summaries

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For a larger view of the Duluth, Minnesota temperature graph provided by the Midwestern Regional Climate Center: Click Here

 

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For a larger view of the International Falls, Minnesota temperature graph provided by the Midwestern Regional Climate Center: Click Here

 

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For a larger view of the Brainerd, Minnesota temperature graph provided by the Midwestern Regional Climate Center: Click Here

 

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For a larger view of the Hibbing, Minnesota temperature graph provided by the Midwestern Regional Climate Center: Click Here

 

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For a larger view of the Ashland, Wisconsin temperature graph provided by the Midwestern Regional Climate Center: Click Here

 

 

Duluth, MN

Normals for the Year
(The climate normals are from a 30 year period defined by the Climate Prediction Center as 1981-2010)

  The Normal, Yearly Average Temperature (degrees F)

39.7

  The Normal, Yearly High Temperature (degrees F)

48.8

  The Normal, Yearly Low Temperature (degrees F)

30.5

 

 

  Normal Yearly Precipitation (inches)

30.96

  Normal Yearly Snowfall (inches)

86.1

 

 

  Normal number of days with Measurable Precipitation

131.4

  Normal number of days with snow depth of 1 inch or greater

 

 

 

  Normal Heating Degree Days

9444

  Normal Cooling Degree Days

204

 

Records for the Year

  Warmest Year (Yearly Average Temperature)

49.9 in 1963

  Coldest  Year (Yearly Average Temperature)

37.7 in 1959

  Highest Observed Temperature (degrees F)

106.0 on the 7th of July in 1936

  Lowest Observed High Temperature (degrees F)

-22 on the 5th of January in 1912 & on the 9th of January in 1982

  Lowest Observed Temperature (degrees F)

-41 on the 2nd of January in 1885

  Highest Observed Low Temperature (degrees F)

79 on the 13th of July in 1936

 

 

  Greatest Yearly Precipitation (inches)

45.38 in 1879

  Least Yearly Precipitation (inches)

18.11 in 1910

 

 

  Greatest Yearly Snowfall (inches)

168.9 in 1950

  Least Yearly Snowfall (inches)

41.9 in 1973

 

International Falls, MN

Normals for the Year
(The climate normals are from a 30 year period defined by the Climate Prediction Center as 1981-2010)

  The Normal, Yearly Average Temperature (degrees F)

37.5

  The Normal, Yearly High Temperature (degrees F)

48.8

  The Normal, Yearly Low Temperature (degrees F)

26.2

 

 

  Normal Yearly Precipitation (inches)

24.22

  Normal Yearly Snowfall (inches)

71.0

 

 

  Normal number of days with Measurable Precipitation

128.0

  Normal number of days with snow depth of 1 inch or greater

 

 

 

  Normal Heating Degree Days

10222

  Normal Cooling Degree Days

193

 

Records for the Year

  Warmest Year (Yearly Average Temperature)

42.3 in 1987

  Coldest  Year (Yearly Average Temperature)

33.8 in 1979

  Highest Observed Temperature (degrees F)

103.0 on the 22nd of July in 1923

  Lowest Observed High Temperature (degrees F)

-28 on the 19th of January in 1985

  Lowest Observed Temperature (degrees F)

-48 on the 8th of February in 1909

  Highest Observed Low Temperature (degrees F)

79 on the 16th of July in

1898

 

 

  Greatest Yearly Precipitation (inches)

34.35 in 1941

  Least Yearly Precipitation (inches)

17.23 in 1952

 

 

  Greatest Yearly Snowfall (inches)

131.8 in 1992

  Least Yearly Snowfall (inches)

25.9 in 1973

 

Brainerd, MN

Normals for the Year
(The seasonal climate normals are from a 30 year period defined by the Climate Prediction Center as 1981-2010)

  The Normal, Yearly Average Temperature (degrees F)

42.4

  The Normal, Yearly High Temperature (degrees F)

52.9

  The Normal, Yearly Low Temperature (degrees F)

31.9

 

 

  Normal Yearly Precipitation (inches)

28.38

  Normal Yearly Snowfall (inches)

46.8

 

 

  Normal Heating Degree Days

8651

  Normal Cooling Degree Days

422

 

Records for the Year

  Warmest Year (Yearly Average Temperature)

46.7 in 1931

  Coldest  Year (Yearly Average Temperature)

37.4 in 1996

  Highest Observed Temperature (degrees F)

106 on July 10th in 1936

  Lowest Observed High Temperature (degrees F)

-23 on January 25th in 1904 and on February 9th in 1899

  Lowest Observed Temperature (degrees F)

-54 on February 2nd in 1996

  Highest Observed Low Temperature (degrees F)

79 on July 19th in 1934

 

 

  Greatest Yearly Precipitation (inches)

39.79 in 2016

  Least Yearly Precipitation (inches)

13.16 in 1976

  Greatest Daily Precipitation (inches)

6.38 on July 11th in 2016

 

 

  Greatest Yearly Snowfall (inches)

74.8 in 1950

  Least Yearly Snowfall (inches)

14.3 in 1958

  Greatest Daily Snowfall (inches)

24.0 on March 4th in 1985

  Greatest Measured Snow Depth (inches)

38 on March 29th in 1965

 

Hibbing, MN

Normals for the Year
(The seasonal climate normals are from a 30 year period defined by the Climate Prediction Center as 1981-2010)

  The Normal, Yearly Average Temperature (degrees F)

37.6

  The Normal, Yearly High Temperature (degrees F)

49.8

  The Normal, Yearly Low Temperature (degrees F)

25.4

 

 

  Normal Heating Degree Days

10147

  Normal Cooling Degree Days

147

 

Records for the Year

  Warmest Year (Yearly Average Temperature)

42.8 in 1998

  Coldest  Year (Yearly Average Temperature)

34.9 in 1972

  Highest Observed Temperature (degrees F)

100 on July 29th in 1999

  Lowest Observed High Temperature (degrees F)

-25 on January 14th in 1972

  Lowest Observed Temperature (degrees F)

-50 on January 20th in 1996

  Highest Observed Low Temperature (degrees F)

75 on August 30th in 2010

 

Ashland, WI

Normals for the Year
(The seasonal climate normals are from a 30 year period defined by the Climate Prediction Center as 1981-2010)

  The Normal, Yearly Average Temperature (degrees F)

41.1

  The Normal, Yearly High Temperature (degrees F)

51.7

  The Normal, Yearly Low Temperature (degrees F)

30.6

 

 

  Normal Heating Degree Days

8938

  Normal Cooling Degree Days

239

 

Records for the Year

  Warmest Year (Yearly Average Temperature)

46.1 in 1987

  Coldest  Year (Yearly Average Temperature)

38.0 in 2014

  Highest Observed Temperature (degrees F)

107 on the 23rd of July in 1934

  Lowest Observed High Temperature (degrees F)

-16 on the 23rd of January in 1935

  Lowest Observed Temperature (degrees F)

-41 on the 17th in 1982

  Highest Observed Low Temperature (degrees F)

78 on the 14th of August in 1938 and on the 29th of August in 1905