S
M
T
W
T
F
S
26
69°
48°
27
80°
44°
28
77°
53°
29
67°
49°
30
56°
39°
1
59°
34°
2
N/A
3
61°
46°
4
70°
56°
5
75°
58°
6
63°
48°
7
57°
38°
8
58°
46°
9
60°
42°
10
62°
45°
11
67°
45°
12
64°
49°
13
69°
52°
14
72°
54°
15
67°
52°
16
76°
57°
17
78°
58°
18
77°
58°
19
74°
57°
20
79°
57°
21
74°
55°
22
74°
49°
23
67°
49°
24
69°
51°
25
70°
53°
26
70°
51°
27
69°
50°
28
71°
51°
29
71°
51°
30
72°
53°
31
77°
61°
1
74°
60°
2
75°
56°
3
74°
57°
4
76°
61°
5
78°
61°
6
82°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Marietta
Marietta's May 2026 forecast shows daily high temperatures ranging from 57° to 82°, with overnight lows between 38° and 62°. The average high for May is 71° with an average low of 53°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Marietta. See also: June | July | August.
