S
M
T
W
T
F
S
26
70°
29°
27
63°
31°
28
63°
27°
29
49°
36°
30
54°
41°
1
58°
31°
2
59°
28°
3
46°
41°
4
61°
35°
5
75°
36°
6
61°
49°
7
64°
35°
8
54°
31°
9
64°
29°
10
55°
44°
11
65°
46°
12
57°
36°
13
64°
29°
14
68°
42°
15
65°
38°
16
78°
35°
17
77°
42°
18
67°
42°
19
77°
45°
20
88°
49°
21
63°
38°
22
68°
31°
23
69°
29°
24
69°
33°
25
56°
47°
26
80°
54°
27
76°
47°
28
58°
44°
29
53°
37°
30
55°
41°
31
59°
45°
1
65°
46°
2
64°
47°
3
59°
48°
4
61°
47°
5
63°
49°
6
63°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Marion
Marion's May 2026 forecast shows daily high temperatures ranging from 53° to 80°, with overnight lows between 37° and 54°. The average high for May is 62° 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 May weather will actually feel in Marion. See also: June | July | August.
