Measurements:
°C
°F
CURRENT WEATHER
14:07
Duluth
82°F
W 6 mph
Feels like: 82°F
Precip: 2%
World Resorts USA Duluth Weather

7 Day Weather Forecast

07.15
wed
DAY
82°F
W 5 mph
precip
1%
NIGHT
70°F
W 3 mph
precip
2%
07.16
thu
DAY
78°F
W 5 mph
precip
11%
NIGHT
62°F
W 5 mph
precip
17%
07.17
fri
DAY
70°F
W 9 mph
precip
9%
NIGHT
64°F
SW 6 mph
precip
44%
07.18
sat
DAY
86°F
S 12 mph
precip
1%
NIGHT
58°F
SW 1 mph
precip
15%
07.19
sun
DAY
80°F
N 8 mph
precip
2%
NIGHT
66°F
NE 6 mph
precip
70%
07.20
mon
DAY
84°F
SE 12 mph
precip
2%
NIGHT
60°F
S 7 mph
precip
8%
07.21
tue
DAY
74°F
NW 2 mph
precip
1%
NIGHT
60°F
NE 6 mph
precip
4%

Duluth Sea Water Temperature in July, °F

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Duluth was 17.2°F. The maximum and minimum values were 12.5°F and 20.9°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 69.8 °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:
August 3 days
July 3 days
June 2 days
The most windy months:
April 9 mph
March 8 mph
November 8 mph
more details