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M
T
W
T
F
S
28
89°
79°
29
88°
78°
30
89°
79°
1
88°
79°
2
89°
78°
3
89°
78°
4
88°
79°
5
88°
78°
6
89°
78°
7
88°
79°
8
88°
78°
9
89°
79°
10
89°
79°
11
90°
78°
12
90°
79°
13
89°
78°
14
88°
79°
15
89°
78°
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88°
78°
17
88°
79°
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89°
79°
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89°
78°
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90°
78°
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88°
79°
22
88°
78°
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89°
78°
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89°
79°
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88°
80°
26
89°
79°
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88°
78°
28
89°
79°
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88°
79°
30
89°
78°
31
88°
79°
1
90°
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 78° 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.
