S
M
T
W
T
F
S
29
67°
26°
30
73°
58°
31
82°
65°
1
80°
53°
2
85°
51°
3
78°
64°
4
85°
61°
5
65°
40°
6
61°
33°
7
50°
34°
8
67°
28°
9
76°
48°
10
79°
51°
11
67°
46°
12
83°
41°
13
78°
64°
14
83°
63°
15
85°
68°
16
84°
61°
17
81°
52°
18
82°
46°
19
57°
35°
20
53°
30°
21
73°
53°
22
73°
55°
23
81°
53°
24
83°
59°
25
70°
45°
26
66°
44°
27
66°
48°
28
65°
45°
29
61°
46°
30
62°
43°
1
64°
46°
2
65°
42°
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 53° to 83°, with overnight lows between 30° and 59°. The average high for April is 68° with an average low of 46°. 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.