S
M
T
W
T
F
S
26
61°
45°
27
73°
45°
28
63°
50°
29
59°
45°
30
55°
43°
1
50°
37°
2
46°
32°
3
61°
34°
4
73°
46°
5
64°
43°
6
54°
41°
7
57°
36°
8
64°
45°
9
72°
52°
10
63°
50°
11
68°
39°
12
72°
37°
13
59°
45°
14
63°
43°
15
64°
39°
16
77°
57°
17
82°
61°
18
86°
64°
19
84°
64°
20
68°
52°
21
64°
48°
22
59°
50°
23
64°
59°
24
72°
54°
25
75°
54°
26
77°
54°
27
73°
61°
28
79°
55°
29
77°
46°
30
72°
52°
31
75°
43°
1
75°
52°
2
75°
48°
3
79°
46°
4
82°
54°
5
82°
59°
6
82°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in St. Marys
St. Marys's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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 St. Marys. See also: June | July | August.
