S
M
T
W
T
F
S
28
78°
68°
29
90°
66°
30
93°
68°
1
101°
75°
2
103°
76°
3
104°
77°
4
102°
74°
5
94°
72°
6
87°
71°
7
83°
69°
8
81°
70°
9
82°
71°
10
85°
69°
11
83°
64°
12
81°
62°
13
85°
64°
14
88°
66°
15
90°
68°
16
89°
65°
17
86°
66°
18
82°
65°
19
85°
66°
20
84°
65°
21
79°
61°
22
80°
62°
23
80°
62°
24
81°
64°
25
81°
65°
26
82°
68°
27
83°
68°
28
86°
67°
29
86°
68°
30
83°
68°
31
86°
67°
1
85°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Saint Thomas
Saint Thomas's July 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 61° and 71°. The average high for July is 84° with an average low of 66°. 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 Saint Thomas. See also: August | September | October.
