S
M
T
W
T
F
S
29
41°
28°
30
39°
30°
31
36°
25°
1
32°
19°
2
32°
10°
3
12°
1°
4
23°
9°
5
34°
19°
6
37°
25°
7
34°
23°
8
36°
25°
9
36°
27°
10
43°
28°
11
39°
27°
12
37°
22°
13
32°
18°
14
23°
18°
15
34°
22°
16
39°
19°
17
30°
10°
18
24°
15°
19
33°
20°
20
43°
24°
21
35°
19°
22
32°
17°
23
36°
13°
24
29°
9°
25
30°
11°
26
33°
17°
27
35°
17°
28
33°
16°
29
32°
14°
30
31°
12°
1
32°
14°
2
31°
11°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in St. Mary's
St. Mary's's April 2026 forecast shows daily high temperatures ranging from 23° to 43°, with overnight lows between 9° and 28°. The average high for April is 33° with an average low of 17°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in St. Mary's. See also: May | June | July.