S
M
T
W
T
F
S
26
41°
33°
27
38°
27°
28
38°
26°
29
40°
29°
30
56°
28°
1
56°
36°
2
63°
43°
3
54°
41°
4
48°
38°
5
43°
38°
6
49°
40°
7
62°
40°
8
57°
39°
9
47°
36°
10
45°
35°
11
52°
38°
12
56°
38°
13
45°
37°
14
53°
41°
15
49°
43°
16
52°
43°
17
56°
41°
18
50°
37°
19
52°
32°
20
50°
33°
21
56°
36°
22
58°
35°
23
57°
37°
24
59°
37°
25
58°
40°
26
62°
41°
27
60°
36°
28
56°
37°
29
57°
37°
30
57°
38°
31
58°
38°
1
57°
39°
2
57°
39°
3
58°
38°
4
58°
38°
5
57°
38°
6
58°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in St. Catherine's
St. Catherine's's May 2026 forecast shows daily high temperatures ranging from 49° to 62°, with overnight lows between 32° and 43°. The average high for May is 56° with an average low of 38°. 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. Catherine's. See also: June | July | August.