S
M
T
W
T
F
S
28
86°
81°
29
87°
81°
30
88°
80°
1
86°
81°
2
86°
81°
3
87°
80°
4
87°
81°
5
88°
80°
6
87°
81°
7
87°
81°
8
88°
80°
9
87°
81°
10
87°
81°
11
88°
80°
12
88°
80°
13
88°
78°
14
89°
77°
15
88°
77°
16
88°
78°
17
89°
78°
18
88°
79°
19
89°
78°
20
89°
78°
21
90°
79°
22
89°
78°
23
89°
78°
24
90°
77°
25
89°
79°
26
88°
78°
27
89°
77°
28
90°
78°
29
88°
79°
30
89°
78°
31
89°
78°
1
90°
78°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in St Thomas
St Thomas's July 2026 forecast shows daily high temperatures ranging from 86° to 90°, with overnight lows between 77° and 81°. The average high for July is 88° with an average low of 79°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in St Thomas. See also: August | September | October.
