S
M
T
W
T
F
S
26
55°
25°
27
50°
36°
28
43°
28°
29
N/A
30
46°
26°
1
58°
36°
2
67°
35°
3
63°
40°
4
58°
40°
5
49°
36°
6
47°
33°
7
51°
34°
8
54°
33°
9
57°
34°
10
60°
42°
11
68°
45°
12
62°
41°
13
67°
45°
14
59°
41°
15
60°
40°
16
62°
47°
17
62°
50°
18
70°
51°
19
68°
48°
20
64°
42°
21
64°
44°
22
65°
44°
23
64°
43°
24
66°
45°
25
66°
46°
26
70°
51°
27
69°
55°
28
68°
48°
29
76°
50°
30
68°
47°
31
69°
54°
1
69°
54°
2
70°
56°
3
69°
58°
4
70°
57°
5
70°
56°
6
71°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in St. Thomas
St. Thomas's May 2026 forecast shows daily high temperatures ranging from 46° to 76°, with overnight lows between 26° and 58°. The average high for May is 64° with an average low of 45°. 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. Thomas. See also: June | July | August.
