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
77°
57°
11
81°
50°
12
81°
46°
13
81°
48°
14
84°
50°
15
86°
52°
16
86°
52°
17
90°
60°
18
93°
66°
19
89°
60°
20
77°
53°
21
82°
56°
22
80°
55°
23
84°
56°
24
86°
59°
25
89°
63°
26
90°
62°
27
86°
61°
28
83°
61°
29
84°
60°
30
83°
57°
1
84°
60°
2
85°
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 77° to 93°, with overnight lows between 53° and 66°. The average high for April is 85° with an average low of 59°. 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.