S
M
T
W
T
F
S
29
72°
54°
30
81°
48°
31
82°
54°
1
81°
54°
2
82°
52°
3
84°
64°
4
86°
57°
5
90°
57°
6
73°
61°
7
64°
55°
8
68°
61°
9
70°
61°
10
75°
55°
11
80°
54°
12
82°
58°
13
84°
59°
14
87°
58°
15
85°
58°
16
86°
59°
17
89°
61°
18
91°
63°
19
88°
64°
20
88°
64°
21
86°
62°
22
87°
63°
23
88°
56°
24
84°
60°
25
84°
59°
26
83°
61°
27
82°
61°
28
82°
60°
29
79°
60°
30
79°
59°
1
80°
60°
2
83°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Marietta
Marietta's April 2026 forecast shows daily high temperatures ranging from 75° to 91°, with overnight lows between 54° and 64°. The average high for April is 84° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Marietta. See also: May | June | July.