S
M
T
W
T
F
S
26
38°
33°
27
43°
33°
28
40°
31°
29
38°
33°
30
39°
31°
1
44°
35°
2
38°
25°
3
35°
25°
4
33°
22°
5
33°
23°
6
31°
24°
7
36°
18°
8
39°
18°
9
38°
28°
10
42°
29°
11
44°
37°
12
46°
35°
13
48°
33°
14
50°
33°
15
51°
35°
16
53°
37°
17
54°
36°
18
51°
35°
19
53°
39°
20
54°
37°
21
53°
39°
22
54°
36°
23
49°
33°
24
50°
36°
25
50°
34°
26
51°
34°
27
50°
35°
28
52°
34°
29
55°
37°
30
60°
41°
31
61°
42°
1
63°
42°
2
63°
40°
3
62°
41°
4
61°
40°
5
56°
38°
6
55°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in St. Mary's
St. Mary's's May 2026 forecast shows daily high temperatures ranging from 38° to 63°, with overnight lows between 28° and 42°. The average high for May is 53° with an average low of 36°. 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's. See also: June | July | August.
