S
M
T
W
T
F
S
28
86°
70°
29
85°
69°
30
86°
70°
1
86°
70°
2
81°
69°
3
81°
70°
4
82°
68°
5
84°
69°
6
85°
69°
7
82°
69°
8
84°
68°
9
86°
69°
10
88°
71°
11
87°
70°
12
87°
69°
13
86°
68°
14
87°
68°
15
83°
66°
16
81°
65°
17
81°
66°
18
82°
66°
19
83°
68°
20
83°
68°
21
84°
66°
22
83°
67°
23
85°
67°
24
85°
68°
25
84°
68°
26
87°
66°
27
86°
67°
28
87°
69°
29
86°
67°
30
84°
71°
31
87°
67°
1
87°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Marietta
Marietta's July 2026 forecast shows daily high temperatures ranging from 81° to 88°, with overnight lows between 65° and 71°. The average high for July is 85° with an average low of 68°. 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 Marietta. See also: August | September | October.
