National Weather Service United States Department of Commerce

Duluth and International Falls Summer Climate Summary

 and Fall Outlook

For the full details check out: Click here

 

For the full details check out: Click here

 

Autumn Climate Outlook

(Autumn/Fall defined as September, October, November)

Temperature Outlook Precipitation Outlook

Normal highs for Duluth, MN start in the low 70s in early September, and cool to the low 30s by the end of November. Normal lows start in the mid 50s in early September, and cool to the upper teens by the end of November. Normal precipitation for the fall is 8.17 inches. Normal snowfall for the fall is 16.1 inches. 

Normal highs for International Falls, MN start in the low 70s in early September, and by the end of November cool to the mid 20s. Normal lows start in the upper 40s in early September, and cool to the single digits above zero by late November. Normal precipitation for the fall is 6.45 inches. Normal snowfall for the fall is 16.0 inches. 

For both locations the latest climate prediction center outlook indicates that odds are tilted towards above normal temperatures and there is no clear indication for above or below normal precipitation.

 

Duluth, MN

Meteorological fall is defined as September, October, and November

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

  The Normal, Seasonal Average Temperature (degrees F)

42.5

 

 

  Normal Seasonal Precipitation (inches)

8.17

  Normal Seasonal Snowfall (inches)

16.1

 

 

  Normal Heating Degree Days

2063

  Normal Cooling Degree Days

15

 

Records for the fall season

  Warmest Season (Seasonal Average Temperature)

49.9 in 1963

  Coldest  Season (Seasonal Average Temperature)

37.7 in 1959

 

 

  Greatest Seasonal Precipitation (inches)

17.74 in 1881

  Least Seasonal Precipitation (inches)

1.97 in 1952

 

 

  Greatest Seasonal Snowfall (inches)

56.8 in 1991

  Least Seasonal Snowfall (inches)

0.2 in 1899

International Falls, MN

Meteorological fall is defined as September, October, and November

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

  The Normal, Seasonal Average Temperature (degrees F)

40.1

 

 

  Normal Seasonal Precipitation (inches)

6.45

  Normal Seasonal Snowfall (inches)

16.0

 

 

  Normal Heating Degree Days

2280

  Normal Cooling Degree Days

11

 

Records for the fall season

  Warmest Season (Seasonal Average Temperature)

48.3 in 1920

  Coldest  Season (Seasonal Average Temperature)

32.8 in 1926

 

 

  Greatest Seasonal Precipitation (inches)

12.09 in 1965

  Least Seasonal Precipitation (inches)

1.79 in 1952

 

 

  Greatest Seasonal Snowfall (inches)

33.5 in 1955

  Least Seasonal Snowfall (inches)

Trace in 1999