S
M
T
W
T
F
S
26
93°
73°
27
93°
73°
28
94°
72°
29
94°
73°
30
93°
73°
31
93°
72°
1
92°
74°
2
95°
72°
3
92°
71°
4
93°
72°
5
94°
73°
6
94°
72°
7
92°
71°
8
91°
70°
9
92°
71°
10
87°
69°
11
88°
71°
12
90°
69°
13
91°
70°
14
92°
71°
15
91°
70°
16
92°
70°
17
92°
62°
18
88°
60°
19
82°
59°
20
82°
59°
21
83°
60°
22
82°
61°
23
82°
63°
24
83°
61°
25
84°
63°
26
86°
65°
27
87°
58°
28
82°
58°
29
82°
61°
30
85°
63°
31
87°
62°
1
88°
59°
2
81°
58°
3
80°
64°
4
84°
65°
5
82°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in St. Martins
St. Martins's August 2026 forecast shows daily high temperatures ranging from 80° to 95°, with overnight lows between 58° and 74°. The average high for August is 88° with an average low of 67°. 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. Martins. See also: September | October | November.