S
M
T
W
T
F
S
31
N/A
1
89°
79°
2
89°
78°
3
88°
78°
4
87°
78°
5
88°
78°
6
89°
79°
7
88°
77°
8
88°
78°
9
87°
77°
10
89°
78°
11
88°
79°
12
88°
79°
13
89°
78°
14
87°
80°
15
86°
81°
16
86°
81°
17
87°
80°
18
86°
81°
19
86°
81°
20
87°
80°
21
86°
81°
22
86°
81°
23
87°
80°
24
86°
81°
25
86°
81°
26
87°
80°
27
87°
80°
28
86°
81°
29
87°
81°
30
88°
80°
1
86°
81°
2
86°
81°
3
87°
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 77° 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.