S
M
T
W
T
F
S
26
95°
70°
27
95°
73°
28
89°
70°
29
90°
70°
30
87°
73°
31
75°
65°
1
86°
64°
2
84°
61°
3
85°
68°
4
77°
56°
5
79°
50°
6
81°
58°
7
79°
60°
8
80°
52°
9
84°
65°
10
84°
62°
11
87°
66°
12
87°
66°
13
77°
64°
14
83°
62°
15
83°
70°
16
82°
60°
17
83°
55°
18
81°
59°
19
79°
51°
20
80°
59°
21
82°
63°
22
78°
53°
23
79°
49°
24
83°
55°
25
86°
66°
26
83°
60°
27
81°
55°
28
80°
51°
29
81°
68°
30
86°
67°
31
90°
62°
1
87°
57°
2
88°
65°
3
89°
69°
4
87°
65°
5
86°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in South Haven
South Haven's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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 South Haven. See also: September | October | November.