S
M
T
W
T
F
S
31
86°
81°
1
85°
81°
2
86°
80°
3
86°
81°
4
87°
81°
5
86°
80°
6
85°
81°
7
86°
81°
8
86°
80°
9
87°
81°
10
87°
81°
11
86°
82°
12
86°
82°
13
87°
81°
14
86°
81°
15
87°
82°
16
87°
82°
17
86°
81°
18
86°
82°
19
87°
82°
20
87°
80°
21
88°
81°
22
87°
81°
23
87°
80°
24
88°
82°
25
88°
82°
26
89°
80°
27
88°
79°
28
88°
78°
29
89°
78°
30
88°
79°
1
88°
78°
2
89°
78°
3
89°
79°
4
90°
79°
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 85° to 90°, with overnight lows between 78° and 82°. 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.