S
M
T
W
T
F
S
28
87°
70°
29
89°
69°
30
87°
68°
1
85°
65°
2
87°
69°
3
87°
70°
4
89°
70°
5
87°
70°
6
84°
70°
7
86°
69°
8
87°
70°
9
86°
70°
10
86°
69°
11
89°
70°
12
90°
71°
13
91°
71°
14
90°
70°
15
90°
71°
16
86°
70°
17
86°
69°
18
87°
70°
19
85°
70°
20
83°
69°
21
84°
68°
22
85°
68°
23
86°
69°
24
86°
69°
25
87°
68°
26
87°
70°
27
87°
67°
28
87°
67°
29
89°
68°
30
88°
67°
31
86°
69°
1
87°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Suwanee-Duluth
Suwanee-Duluth's July 2026 forecast shows daily high temperatures ranging from 83° to 91°, with overnight lows between 65° and 71°. The average high for July is 87° 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 Suwanee-Duluth. See also: August | September | October.