S
M
T
W
T
F
S
31
88°
78°
1
88°
79°
2
88°
78°
3
89°
77°
4
88°
76°
5
87°
78°
6
88°
77°
7
89°
79°
8
87°
79°
9
88°
78°
10
86°
81°
11
87°
80°
12
86°
81°
13
86°
81°
14
87°
80°
15
86°
81°
16
86°
81°
17
87°
80°
18
86°
81°
19
86°
81°
20
87°
80°
21
87°
81°
22
86°
81°
23
86°
80°
24
87°
80°
25
86°
81°
26
87°
81°
27
88°
80°
28
87°
81°
29
87°
81°
30
88°
80°
1
87°
81°
2
87°
81°
3
86°
80°
4
87°
81°
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 86° to 89°, with overnight lows between 76° and 81°. The average high for June is 87° with an average low of 80°. 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.