S
M
T
W
T
F
S
29
70°
32°
30
68°
36°
31
39°
28°
1
39°
25°
2
34°
30°
3
32°
30°
4
37°
30°
5
55°
31°
6
34°
18°
7
43°
12°
8
54°
30°
9
39°
30°
10
57°
38°
11
52°
48°
12
82°
45°
13
68°
48°
14
62°
45°
15
70°
50°
16
67°
30°
17
54°
35°
18
56°
38°
19
62°
45°
20
68°
46°
21
68°
42°
22
56°
37°
23
59°
36°
24
53°
40°
25
53°
38°
26
54°
37°
27
57°
44°
28
55°
45°
29
66°
45°
30
68°
44°
1
55°
42°
2
56°
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 52° to 82°, with overnight lows between 30° and 50°. The average high for April is 61° with an average low of 42°. 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.