Weather & Forecast

Duluth Forecast:

Today Saturday Sunday Monday Tuesday
It is forecast to be Chance of a Thunderstorm at 7:00 PM CDT on July 21, 2017
Chance of a Thunderstorm
It is forecast to be Overcast at 7:00 PM CDT on July 22, 2017
It is forecast to be Chance of Rain at 7:00 PM CDT on July 23, 2017
Chance of Rain
It is forecast to be Clear at 7:00 PM CDT on July 24, 2017
It is forecast to be Partly Cloudy at 7:00 PM CDT on July 25, 2017
Partly Cloudy

Travel Conditions:


Duluth 3-Day Forecast:

Duluth 3-day Forecast


Duluth Climate:

Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec
Average High 19 24 34 49 62 71 76 74 65 51 36 22
Average Low 2 6 17 30 41 49 55 54 46 35 22 7
Average Precipitation (in.) 1 1 2 2 3 4 4 4 4 3 2 1
Average Snowfall (in.) 19 12 13 7 0 0 0 0 0 2 14 18

Annual Precipitation: 40 inches
Annual Snowfall: 85 inches


Fall Colors:
Fall colors in Duluth and on the North Shore of Lake Superior are spectacular. The landscape becomes alive in color with vibrant reds, oranges, and yellows. For biking, hiking, and touring this is as good as it gets as the Sawtooth Mountains come down to the shores of Lake Superior with their cascading leaves and majestic carpet of colors. Stunning maple hillsides mixed with birch and aspen collide with the blue waters of Lake Superior to provide unbelievably breathtaking scenery and fantastic photograph opportunities. Fall colors usually peak in the Duluth area from late September to early October. Leaf colors last for approximately 6-8 weeks but usually peak for 1-2 weeks. Maples turn first, then aspen and oak, and tamarack provide a late wave of yellow and gold. There are really two seasons of fall color on the North Shore of Lake Superior due to the temperature variations found from along the low Lake Superior shoreline to the inland high county and Sawtooth Mountains. The first season begins inland on the highlands around mid-September with color peaking between September 20th through the first week in October. Look for the orange and some red colors that are found on the high ridges where a lot of maple trees grow. The second season occurs directly along the shoreline of Lake Superior. Here, the aspen and birch trees produce a yellow burst of color along Highway 61. The yellow color usually peaks during the last week of September and may hang on through mid-October. The hotel provides a panoramic view of Duluth’s hillside of beautiful fall colors over Skyline Drive and Enger Tower.


Duluth Daily Temperature Averages, 12 months

Snowfall averages: Normally 86.1 inches of snow per year (based on 1981-2010 climate record). Winter storms are considered to be storms that produce 6 inches or more of snow at a given location. From 1990 to early 2010 Duluth had 70 winter storms, or averaged 3.5 winter storms per year. Duluth also averaged about 1.6 10 inch snow storms per year, and a 20 inch snow storm every 5 years.


Top snowfalls for one storm:

36.9 inches November 3rd, 1991
33.1 inches December 7th, 1950
27.1 inches January 27th, 2004


Top winter season snowfall:

135.4 inches 1995-1996
131.8 inches 1949-1950
130.1 inches 2013-2014


Earliest and latest snow:

Earliest Measurable Snow: Sept 18, 1991
Latest Measurable Snow: June 2, 1945
Average First Measurable: October 24th
Average Last Measurable: April 27th
Average First 1 inch Snow: November 4th
Average Last 1 inch Snow: April 12th


Coldest Low Temperature:

-41F, January 2, 1885
-39F, February 2, 1996
-39F, January 15, 1972
-38F, January 17, 1982


Warmest days:

97F, July 28, 2006
97F, July 8th, 1988
95.4F, August 30th, 1961


Warmest months:

86F, July 1988
84.8F, July 2006
84.8F, July 2012



June is the wettest average month of 4.3 inches with 14-15 days of rain. February is the driest with an average of .09 inches of rainfall.


Frost freeze information:

Duluth Harbor: The average first frost occurs around October 2nd at the harbor, with 90% of the first fall frosts occurring by October 25th. The average last spring frost occurs around May 30th, with 90% of the last spring frosts occurring by July 7th.

Duluth Airport: The average first frost occurs around September 13 at the airport, with 90% of the first fall frosts occurring by September 28. The average last spring frost occurs around June 5th, with 90% of the last spring frosts occurring by June 24th.


Travel Conditions: