S
M
T
W
T
F
S
26
89°
79°
27
89°
78°
28
90°
79°
29
89°
79°
30
89°
80°
31
90°
79°
1
89°
79°
2
89°
80°
3
90°
79°
4
89°
78°
5
89°
79°
6
90°
80°
7
89°
79°
8
90°
80°
9
89°
80°
10
90°
79°
11
89°
80°
12
90°
78°
13
89°
80°
14
89°
79°
15
Hist. Avg.
90°
80°
16
Hist. Avg.
90°
80°
17
Hist. Avg.
90°
80°
18
Hist. Avg.
90°
80°
19
Hist. Avg.
90°
80°
20
Hist. Avg.
90°
80°
21
Hist. Avg.
90°
80°
22
Hist. Avg.
90°
80°
23
Hist. Avg.
90°
80°
24
Hist. Avg.
90°
80°
25
Hist. Avg.
90°
80°
26
Hist. Avg.
90°
80°
27
Hist. Avg.
90°
80°
28
Hist. Avg.
90°
80°
29
Hist. Avg.
90°
80°
30
Hist. Avg.
90°
80°
31
Hist. Avg.
90°
80°
1
Hist. Avg.
90°
80°
2
Hist. Avg.
90°
80°
3
Hist. Avg.
90°
80°
4
Hist. Avg.
90°
80°
5
Hist. Avg.
89°
80°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in St Thomas
St Thomas's August 2026 forecast shows daily high temperatures ranging from 89° to 90°, with overnight lows between 78° and 80°. The average high for August 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 August weather will actually feel in St Thomas. See also: September | October | November.
