S
M
T
W
T
F
S
26
94°
70°
27
94°
73°
28
86°
69°
29
89°
68°
30
85°
70°
31
74°
62°
1
84°
64°
2
83°
60°
3
84°
66°
4
74°
61°
5
77°
56°
6
79°
55°
7
78°
62°
8
79°
54°
9
84°
66°
10
85°
66°
11
86°
69°
12
87°
69°
13
77°
67°
14
N/A
15
81°
60°
16
80°
56°
17
81°
62°
18
77°
59°
19
73°
54°
20
75°
59°
21
79°
59°
22
81°
62°
23
85°
61°
24
82°
61°
25
80°
59°
26
78°
59°
27
77°
58°
28
79°
62°
29
82°
64°
30
83°
65°
31
83°
64°
1
82°
62°
2
81°
63°
3
82°
63°
4
82°
62°
5
81°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Tonka Bay
Tonka Bay's August 2026 forecast shows daily high temperatures ranging from 73° to 85°, with overnight lows between 54° and 65°. The average high for August is 80° with an average low of 61°. 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 Tonka Bay. See also: September | October | November.