S
M
T
W
T
F
S
26
65°
53°
27
63°
53°
28
64°
50°
29
64°
53°
30
62°
52°
31
62°
51°
1
65°
51°
2
66°
54°
3
65°
53°
4
62°
52°
5
63°
53°
6
66°
54°
7
66°
55°
8
65°
55°
9
66°
53°
10
61°
49°
11
61°
52°
12
62°
51°
13
65°
52°
14
66°
54°
15
66°
53°
16
67°
54°
17
68°
54°
18
68°
53°
19
67°
54°
20
68°
53°
21
68°
54°
22
67°
53°
23
67°
53°
24
66°
52°
25
67°
53°
26
67°
52°
27
68°
53°
28
67°
53°
29
67°
51°
30
66°
48°
31
64°
48°
1
63°
49°
2
62°
47°
3
63°
46°
4
62°
47°
5
62°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Big Lagoon
Big Lagoon's August 2026 forecast shows daily high temperatures ranging from 61° to 68°, with overnight lows between 46° and 55°. The average high for August is 65° 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 Big Lagoon. See also: September | October | November.
