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