S
M
T
W
T
F
S
28
92°
77°
29
93°
76°
30
95°
77°
1
97°
76°
2
96°
72°
3
92°
73°
4
90°
74°
5
89°
73°
6
88°
74°
7
89°
73°
8
91°
74°
9
94°
74°
10
97°
75°
11
96°
74°
12
95°
72°
13
97°
73°
14
95°
73°
15
94°
72°
16
96°
72°
17
93°
70°
18
92°
67°
19
95°
72°
20
97°
74°
21
98°
75°
22
97°
73°
23
95°
73°
24
95°
72°
25
93°
69°
26
95°
72°
27
96°
72°
28
96°
73°
29
95°
73°
30
96°
72°
31
95°
73°
1
96°
73°
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 88° to 98°, with overnight lows between 67° and 75°. The average high for July is 94° with an average low of 73°. 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.