S
M
T
W
T
F
S
26
84°
76°
27
86°
75°
28
87°
75°
29
87°
76°
30
88°
77°
1
84°
78°
2
84°
78°
3
85°
77°
4
84°
78°
5
84°
78°
6
85°
77°
7
84°
77°
8
84°
76°
9
85°
78°
10
84°
78°
11
84°
79°
12
85°
79°
13
84°
78°
14
84°
79°
15
85°
79°
16
85°
78°
17
84°
79°
18
84°
79°
19
85°
78°
20
84°
77°
21
84°
79°
22
85°
79°
23
85°
80°
24
86°
80°
25
85°
79°
26
85°
80°
27
86°
80°
28
85°
79°
29
85°
80°
30
86°
80°
31
86°
79°
1
89°
78°
2
88°
78°
3
88°
77°
4
87°
78°
5
88°
78°
6
88°
77°
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 84° to 89°, with overnight lows between 75° and 80°. The average high for May is 85° with an average low of 78°. 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.
