S
M
T
W
T
F
S
26
63°
38°
27
69°
41°
28
67°
49°
29
51°
41°
30
53°
33°
1
50°
31°
2
47°
31°
3
55°
46°
4
61°
50°
5
56°
43°
6
51°
39°
7
44°
36°
8
48°
40°
9
49°
41°
10
55°
45°
11
54°
43°
12
55°
44°
13
57°
46°
14
56°
44°
15
58°
44°
16
56°
44°
17
58°
50°
18
62°
51°
19
63°
51°
20
65°
52°
21
66°
53°
22
64°
51°
23
62°
52°
24
63°
47°
25
59°
45°
26
61°
54°
27
64°
55°
28
69°
54°
29
65°
54°
30
64°
51°
31
66°
46°
1
61°
49°
2
60°
49°
3
62°
50°
4
63°
48°
5
63°
51°
6
64°
52°
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 44° to 69°, with overnight lows between 31° and 55°. The average high for May is 59° with an average low of 47°. 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.
