S
M
T
W
T
F
S
26
95°
79°
27
89°
78°
28
89°
78°
29
93°
79°
30
94°
84°
31
92°
79°
1
91°
78°
2
93°
78°
3
90°
79°
4
89°
78°
5
90°
78°
6
90°
78°
7
93°
82°
8
N/A
9
93°
83°
10
93°
82°
11
91°
81°
12
90°
82°
13
92°
82°
14
93°
82°
15
92°
81°
16
90°
79°
17
91°
79°
18
91°
80°
19
90°
79°
20
90°
79°
21
91°
80°
22
87°
81°
23
88°
80°
24
87°
81°
25
87°
81°
26
88°
80°
27
87°
82°
28
87°
82°
29
88°
81°
30
87°
82°
31
87°
82°
1
88°
81°
2
87°
82°
3
87°
82°
4
88°
81°
5
88°
82°
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 87° to 93°, with overnight lows between 79° and 83°. The average high for August is 89° with an average low of 81°. 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.
