S
M
T
W
T
F
S
28
54°
51°
29
66°
51°
30
91°
58°
1
84°
65°
2
89°
66°
3
74°
54°
4
62°
56°
5
64°
54°
6
66°
54°
7
82°
59°
8
71°
61°
9
77°
59°
10
66°
57°
11
82°
60°
12
93°
71°
13
96°
75°
14
98°
74°
15
81°
70°
16
74°
61°
17
72°
59°
18
79°
67°
19
88°
64°
20
89°
72°
21
72°
54°
22
76°
53°
23
82°
58°
24
82°
60°
25
85°
70°
26
91°
64°
27
71°
56°
28
72°
57°
29
78°
61°
30
88°
71°
31
72°
63°
1
73°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Duluth
Duluth's July 2026 forecast shows daily high temperatures ranging from 72° to 73°, with overnight lows between 59° and 63°. The average high for July is 73° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Duluth. See also: August | September | October.
