S
M
T
W
T
F
S
26
81°
55°
27
83°
67°
28
71°
59°
29
65°
51°
30
64°
43°
1
63°
46°
2
62°
41°
3
71°
38°
4
80°
57°
5
66°
46°
6
62°
45°
7
65°
42°
8
73°
46°
9
80°
55°
10
72°
56°
11
74°
47°
12
79°
49°
13
77°
53°
14
72°
47°
15
82°
54°
16
82°
72°
17
88°
69°
18
85°
67°
19
83°
66°
20
71°
59°
21
68°
60°
22
65°
63°
23
71°
63°
24
80°
57°
25
82°
61°
26
76°
69°
27
82°
67°
28
82°
66°
29
78°
63°
30
76°
59°
31
77°
59°
1
79°
60°
2
78°
58°
3
80°
60°
4
81°
63°
5
83°
64°
6
82°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in St. Mary
St. Mary's May 2026 forecast shows daily high temperatures ranging from 76° to 83°, with overnight lows between 57° and 69°. The average high for May is 80° with an average low of 62°. 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. Mary. See also: June | July | August.
