The temperatures in Duluth in May are quite cold with temperatures between 5°C and 17°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Duluth during the month of May. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Please note that Duluth can expect a few days of snow in May.
Our weather forecast can give you a great sense of what weather to expect in Duluth in May 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
17° / 5°
Rainy Days
6
Snowy Days
1
Dry Days
25
Rainfall
58
mm
Sun Hours
8.9
Hrs
