S
M
T
W
T
F
S
31
89°
80°
1
90°
80°
2
89°
83°
3
90°
81°
4
89°
81°
5
89°
82°
6
89°
81°
7
89°
82°
8
90°
82°
9
87°
79°
10
88°
79°
11
89°
81°
12
90°
83°
13
91°
83°
14
94°
80°
15
90°
82°
16
89°
80°
17
89°
78°
18
89°
78°
19
90°
79°
20
88°
78°
21
89°
79°
22
90°
79°
23
93°
81°
24
95°
83°
25
92°
83°
26
93°
81°
27
89°
80°
28
91°
82°
29
91°
83°
30
91°
83°
1
91°
81°
2
91°
80°
3
92°
80°
4
90°
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 90° to 92°, with overnight lows between 80° and 81°. The average high for June is 91° with an average low of 81°. 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.