S
M
T
W
T
F
S
28
90°
69°
29
91°
67°
30
91°
70°
1
90°
70°
2
90°
69°
3
91°
68°
4
90°
70°
5
90°
71°
6
89°
66°
7
91°
70°
8
91°
66°
9
86°
66°
10
86°
67°
11
87°
66°
12
86°
67°
13
87°
66°
14
88°
71°
15
89°
71°
16
87°
72°
17
87°
73°
18
91°
72°
19
90°
72°
20
87°
71°
21
87°
72°
22
88°
70°
23
87°
70°
24
86°
71°
25
87°
69°
26
87°
72°
27
89°
69°
28
87°
67°
29
87°
68°
30
90°
71°
31
91°
72°
1
92°
70°
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 92°, with overnight lows between 66° and 73°. The average high for July is 89° with an average low of 69°. 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.
