14.08
fri
fri
Day
72°F
W 11 mph
Precip.
6%
6%
Night
64°F
W 11 mph
Precip.
9%
9%
15.08
sat
sat
Day
63°F
W 7 mph
Precip.
71%
71%
Night
64°F
SE 11 mph
Precip.
29%
29%
16.08
sun
sun
Day
73°F
S 8 mph
Precip.
2%
2%
Night
59°F
NE 3 mph
Precip.
5%
5%
17.08
mon
mon
Day
82°F
NE 9 mph
Precip.
1%
1%
Night
63°F
NE 10 mph
Precip.
73%
73%
18.08
tue
tue
Day
72°F
SE 8 mph
Precip.
3%
3%
Night
57°F
SE 4 mph
Precip.
5%
5%
19.08
wed
wed
Day
75°F
E 3 mph
Precip.
1%
1%
Night
59°F
SW 4 mph
Precip.
4%
4%
20.08
thu
thu
Day
81°F
NE 10 mph
Precip.
17%
17%
Night
70°F
NE 8 mph
Precip.
6%
6%
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 67.5°F. The highest and lowest sea temperatures during the month were 71.1°F and 62.6°F.
Air temperature in Duluth, °F
Precipitation total in Duluth, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Duluth
Duluth on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Duluth
Local time: 06:09
August 14, friday
0900
66°F
W
8 mph
8 mph
1200
72°F
W
11 mph
11 mph
1500
73°F
W
14 mph
14 mph
1800
70°F
SW
17 mph
17 mph
2100
64°F
SW
14 mph
14 mph
August 15, saturday
0000
64°F
W
11 mph
11 mph
0300
61°F
SW
7 mph
7 mph
0600
61°F
W
8 mph
8 mph
