S
M
T
W
T
F
S
28
77°
57°
29
82°
56°
30
83°
61°
1
84°
65°
2
80°
58°
3
81°
60°
4
81°
55°
5
80°
57°
6
84°
57°
7
82°
56°
8
81°
57°
9
82°
61°
10
79°
65°
11
77°
66°
12
85°
65°
13
84°
62°
14
82°
58°
15
81°
59°
16
80°
57°
17
81°
58°
18
81°
57°
19
82°
57°
20
82°
59°
21
83°
63°
22
81°
65°
23
80°
58°
24
85°
65°
25
86°
60°
26
85°
55°
27
78°
55°
28
77°
56°
29
77°
58°
30
79°
56°
31
78°
59°
1
80°
64°
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 77° to 86°, with overnight lows between 55° and 66°. The average high for July is 81° with an average low of 59°. 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.
