Duluth (MN) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Duluth.
Climate overview of Duluth
Temperatures in Duluth, Minnesota, United States of America, vary greatly throughout the year. July is the hottest month at 25°C (77°F), while February is the coldest at -7°C (19°F).
With around 778 mm (31 in) of annual rain/snowfall, the city has moderate precipitation levels. June is the wettest month and January the driest. It also has a distinct dry season from January to February. July is the sunniest month, averaging 10.4 hours of sunshine per day.
Duluth Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Duluth — and find the best time to visit.
Monthly Temperature in Duluth
The climate in Duluth is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a comfortable 25°C (77°F) in July to a very cold -7°C (19°F) in the coolest month, February.
Nights vary from 14°C (57°F) in July to around -16°C (3°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Duluth
Generally, Duluth receives mid-range precipitation levels, with 778 mm (31 in) annually. The climate in Duluth shows significant variation throughout the year. Expect high rainfall in June, the wettest month, with an average of 116 mm (4.6 in) of precipitation over 14 rainy days.
In contrast, the driest month January offers drier and sunnier days, with around 19 mm (0.7 in) of snowfall over 8 snowy days. For more details, please visit our Duluth Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Duluth
For those who appreciate different seasons, Duluth serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 10.4 hours of sunshine daily, and embrace the darker days in November, offering only 3.3 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Duluth by Month
The relative humidity is high throughout the year in Duluth.
The city experiences its highest humidity in September, reaching 76%. In May, the humidity drops to its lowest level at 63%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Duluth
The mean wind speed over the year ranges from 3 m/s (6 knots) in July and August to 4 m/s (8 knots) in January, February, March, April, May, June, September, October, November and December. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Duluth
Frequently asked questions about the climate in Duluth
What is the best time to visit Duluth?
July and August typically offer the most optimal weather in Duluth. In contrast, January, February, March, April, November and December tend to have less optimal conditions. Duluth has a distinct dry season from January to February.
What temperatures can I expect in Duluth?
Daytime highs range from -7°C (19°F) in February to 25°C (77°F) in July. Nighttime lows range from -16°C (3°F) to 14°C (57°F). Temperatures vary considerably through the year.
How much rain does Duluth get?
Annual rainfall is around 778 mm (31 in). June is the wettest month with 116 mm (4.6 in), while January is the driest with 19 mm (0.7 in).
How sunny is Duluth?
Duluth receives around 2,366 hours of sunshine per year. July is the sunniest month with 311 hours, while November is the cloudiest with just 100 hours. Overall, Duluth enjoys abundant sunshine.
Duluth 3-Day Forecast
Duluth (MN) 3-Day Forecast
Duluth on the map
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