Measurements:
°C
°F
CURRENT WEATHER
09:27
Duluth
58°F
E 21 mph
Feels like: 52°F
Precip: 10%
World Resorts USA Duluth Weather

14 Day Weather Forecast

09.15
tue
DAY
62°F
E 17 mph
precip
3%
NIGHT
54°F
SE 6 mph
precip
9%
09.16
wed
DAY
54°F
W 6 mph
precip
18%
NIGHT
54°F
SW 9 mph
precip
34%
09.17
thu
DAY
62°F
W 2 mph
precip
15%
NIGHT
58°F
SW 11 mph
precip
20%
09.18
fri
DAY
56°F
W 12 mph
precip
57%
NIGHT
52°F
W 14 mph
precip
27%
09.19
sat
DAY
56°F
SW 17 mph
precip
28%
NIGHT
52°F
SW 9 mph
precip
29%
09.20
sun
DAY
58°F
SW 17 mph
precip
19%
NIGHT
54°F
SW 17 mph
precip
27%
09.21
mon
DAY
56°F
SW 19 mph
precip
39%
NIGHT
52°F
SW 21 mph
precip
65%
09.22
tue
DAY
52°F
SW 14 mph
precip
41%
NIGHT
52°F
N 2 mph
precip
27%
09.23
wed
DAY
54°F
NE 11 mph
precip
25%
NIGHT
52°F
E 18 mph
precip
32%
09.24
thu
DAY
52°F
SE 14 mph
precip
15%
NIGHT
50°F
NE 2 mph
precip
9%
09.25
fri
DAY
60°F
N 7 mph
precip
3%
NIGHT
58°F
W 4 mph
precip
13%
09.26
sat
DAY
64°F
W 1 mph
precip
6%
NIGHT
60°F
SW 8 mph
precip
32%
09.27
sun
DAY
74°F
N 14 mph
precip
14%
NIGHT
68°F
NE 6 mph
precip
11%
09.28
mon
DAY
60°F
E 18 mph
precip
2%
NIGHT
54°F
E 15 mph
precip
2%

Duluth Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Duluth was 66.8°F. The maximum and minimum values were 63.8°F and 69.8°F respectively.

Duluth on the Weather Map

Best Time to Visit Duluth
The most sunny months:
August 14 days
September 14 days
July 13 days
The most warm months:
July 77.5 °F
August 75.8 °F
June 69.8 °F
Warmest sea temperature:
August 67.5 °F
July 65.5 °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
USA Resorts:
NAME
F°
Boston +62
Chicago +66
Hawaii +80
Las Vegas +80
Los Angeles +72
Maui +66
Miami +88
Myrtle Beach +78
New York +66
Panama City Beach +90
San Diego +70
San Francisco +60
Santa Monica +70
Sarasota +86
Washington +66
all resorts
24 Hours Weather Forecast
Duluth
Local time: 09:27
15 sep, tuesday
1200 62°F
E
17 mph
1500 68°F
SE
13 mph
1800 66°F
E
6 mph
2100 60°F
SE
7 mph
16 sep, wednesday
0000 54°F
SE
6 mph
0300 52°F
SE
4 mph
0600 48°F
S
2 mph
0900 50°F
SW
2 mph