Measurements:
°C
°F
CURRENT WEATHER
11:11
Duluth
50°F
NW 7 mph
Feels like: 46°F
Precip: 0%
World Resorts USA Duluth Weather

7 Day Weather Forecast

05.14
thu
DAY
50°F
NW 7 mph
precip
0%
NIGHT
54°F
N 11 mph
precip
100%
05.15
fri
DAY
74°F
NE 16 mph
precip
0%
NIGHT
54°F
NE 8 mph
precip
0%
05.16
sat
DAY
66°F
E 9 mph
precip
0%
NIGHT
48°F
SW 8 mph
precip
0%
05.17
sun
DAY
44°F
SW 19 mph
precip
100%
NIGHT
46°F
SW 14 mph
precip
100%
05.18
mon
DAY
52°F
NW 2 mph
precip
85%
NIGHT
46°F
SW 17 mph
precip
100%
05.19
tue
DAY
42°F
E 19 mph
precip
68%
NIGHT
40°F
E 17 mph
precip
0%
05.20
wed
DAY
52°F
E 11 mph
precip
0%
NIGHT
42°F
W 6 mph
precip
87%

Duluth Sea Water Temperature in May, °F

Select Year: 2025 2024 2023

The average sea surface temperature in May 2025 for Duluth was 6.2°F. The maximum and minimum values were 3.3°F and 9.9°F respectively.

Duluth on the Weather Map

Best Time to Visit Duluth
The most sunny months:
September 14 days
August 13 days
July 12 days
The most warm months:
July 77.4 °F
August 76.5 °F
June 70.6 °F
Warmest sea temperature:
August 67.6 °F
July 65.4 °F
September 63.7 °F
The most cold months:
January 14.4 °F
February 16.7 °F
December 21.4 °F
The most rainy months:
June 3 days
August 3 days
July 3 days
The most windy months:
April 9 mph
March 8 mph
November 8 mph
more details