The temperatures in Duluth in August are comfortable with low of 13°C and and high up to 25°C.
You can expect about 3 to 8 days of rain in Duluth during the month of August. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Duluth in August 2025.
If you’re planning to visit Duluth in the near future, we highly recommend that you review the 14 day weather forecast for Duluth before you arrive.
Temperatures
25° / 13°
Rainy Days
3
Snowy Days
0
Dry Days
28
Rainfall
51
mm
Sun Hours
10.2
Hrs
