S
M
T
W
T
F
S
28
92°
72°
29
94°
74°
30
96°
75°
1
96°
75°
2
99°
74°
3
97°
73°
4
99°
74°
5
98°
71°
6
93°
72°
7
94°
72°
8
93°
73°
9
92°
72°
10
91°
73°
11
89°
71°
12
89°
70°
13
90°
71°
14
90°
71°
15
89°
70°
16
86°
68°
17
90°
67°
18
89°
71°
19
90°
71°
20
91°
72°
21
90°
72°
22
86°
71°
23
89°
72°
24
92°
72°
25
91°
71°
26
91°
72°
27
90°
73°
28
91°
72°
29
89°
71°
30
90°
72°
31
89°
72°
1
90°
71°
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 86° to 99°, with overnight lows between 67° and 74°. The average high for July is 91° with an average low of 72°. 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.
