S
M
T
W
T
F
S
26
79°
65°
27
80°
66°
28
79°
63°
29
80°
58°
30
74°
56°
31
73°
57°
1
Hist. Avg.
78°
57°
2
Hist. Avg.
78°
57°
3
Hist. Avg.
78°
57°
4
Hist. Avg.
78°
57°
5
Hist. Avg.
78°
57°
6
Hist. Avg.
78°
57°
7
Hist. Avg.
78°
57°
8
Hist. Avg.
78°
57°
9
Hist. Avg.
78°
57°
10
Hist. Avg.
78°
57°
11
Hist. Avg.
78°
57°
12
Hist. Avg.
78°
57°
13
Hist. Avg.
78°
57°
14
Hist. Avg.
77°
57°
15
Hist. Avg.
77°
57°
16
Hist. Avg.
77°
57°
17
Hist. Avg.
77°
56°
18
Hist. Avg.
77°
56°
19
Hist. Avg.
77°
56°
20
Hist. Avg.
76°
56°
21
Hist. Avg.
76°
55°
22
Hist. Avg.
76°
55°
23
Hist. Avg.
76°
55°
24
Hist. Avg.
75°
55°
25
Hist. Avg.
75°
54°
26
Hist. Avg.
75°
54°
27
Hist. Avg.
75°
54°
28
Hist. Avg.
74°
54°
29
Hist. Avg.
74°
53°
30
Hist. Avg.
74°
53°
31
Hist. Avg.
73°
53°
1
Hist. Avg.
73°
53°
2
Hist. Avg.
73°
52°
3
Hist. Avg.
73°
52°
4
Hist. Avg.
72°
52°
5
Hist. Avg.
72°
52°
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 73° to 80°, with overnight lows between 56° and 66°. The average high for August is 78° with an average low of 61°. 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.
