S
M
T
W
T
F
S
28
74°
55°
29
75°
56°
30
77°
54°
1
75°
61°
2
77°
61°
3
74°
54°
4
71°
54°
5
73°
57°
6
72°
56°
7
76°
65°
8
75°
64°
9
79°
57°
10
72°
56°
11
72°
56°
12
73°
64°
13
76°
64°
14
72°
58°
15
75°
59°
16
81°
66°
17
80°
57°
18
80°
56°
19
73°
58°
20
73°
57°
21
75°
57°
22
74°
58°
23
74°
60°
24
75°
58°
25
71°
62°
26
72°
57°
27
77°
63°
28
79°
67°
29
78°
65°
30
79°
66°
31
81°
65°
1
76°
65°
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 71° to 81°, with overnight lows between 54° and 67°. The average high for July is 75° with an average low of 60°. 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.
