S
M
T
W
T
F
S
28
92°
72°
29
94°
74°
30
96°
75°
1
96°
75°
2
98°
74°
3
95°
74°
4
93°
69°
5
91°
69°
6
88°
71°
7
90°
71°
8
90°
73°
9
92°
72°
10
91°
72°
11
91°
72°
12
88°
71°
13
83°
71°
14
84°
71°
15
88°
73°
16
90°
74°
17
92°
73°
18
92°
72°
19
91°
73°
20
92°
71°
21
89°
71°
22
88°
74°
23
90°
74°
24
83°
73°
25
87°
73°
26
90°
73°
27
91°
74°
28
93°
72°
29
88°
72°
30
88°
68°
31
90°
65°
1
87°
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 ° to °, with overnight lows between ° and °. The average high for July is ° with an average low of °. 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.