S
M
T
W
T
F
S
28
89°
79°
29
89°
78°
30
90°
78°
1
88°
79°
2
89°
78°
3
88°
79°
4
89°
78°
5
89°
78°
6
88°
79°
7
89°
78°
8
88°
79°
9
89°
78°
10
89°
78°
11
88°
79°
12
88°
79°
13
89°
80°
14
89°
78°
15
90°
78°
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88°
80°
17
90°
79°
18
89°
78°
19
90°
77°
20
88°
78°
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88°
79°
22
89°
79°
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89°
80°
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90°
78°
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88°
79°
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89°
79°
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89°
80°
28
90°
79°
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90°
79°
30
89°
78°
31
88°
79°
1
89°
80°
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 88° to 90°, with overnight lows between 77° and 80°. The average high for July is 89° 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.
