S
M
T
W
T
F
S
31
66°
46°
1
61°
49°
2
60°
49°
3
62°
50°
4
63°
48°
5
63°
51°
6
64°
52°
7
64°
50°
8
63°
49°
9
64°
51°
10
66°
56°
11
68°
58°
12
65°
51°
13
65°
51°
14
66°
55°
15
70°
58°
16
74°
58°
17
76°
58°
18
76°
60°
19
77°
61°
20
77°
62°
21
74°
62°
22
74°
63°
23
78°
58°
24
75°
54°
25
74°
61°
26
78°
63°
27
79°
63°
28
80°
64°
29
79°
65°
30
79°
57°
1
78°
55°
2
73°
64°
3
79°
65°
4
80°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in St. Thomas
St. Thomas's June 2026 forecast shows daily high temperatures ranging from 60° to 80°, with overnight lows between 46° and 66°. The average high for June is 71° with an average low of 57°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in St. Thomas. See also: July | August | September.