S
M
T
W
T
F
S
26
76°
55°
27
76°
55°
28
74°
56°
29
76°
54°
30
77°
55°
31
79°
57°
1
78°
54°
2
79°
53°
3
77°
53°
4
73°
52°
5
73°
51°
6
70°
51°
7
74°
55°
8
78°
56°
9
77°
56°
10
77°
57°
11
76°
56°
12
76°
56°
13
77°
55°
14
76°
57°
15
79°
51°
16
77°
54°
17
76°
49°
18
74°
49°
19
71°
48°
20
70°
49°
21
73°
52°
22
73°
55°
23
72°
49°
24
73°
54°
25
76°
53°
26
75°
52°
27
74°
52°
28
73°
47°
29
71°
48°
30
69°
52°
31
67°
48°
1
69°
47°
2
70°
46°
3
69°
52°
4
70°
49°
5
70°
45°
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 67° to 79°, with overnight lows between 45° and 57°. The average high for August is 74° with an average low of 52°. 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.
