S
M
T
W
T
F
S
26
85°
64°
27
84°
67°
28
86°
67°
29
86°
68°
30
85°
67°
31
86°
68°
1
86°
66°
2
85°
67°
3
85°
66°
4
84°
65°
5
85°
67°
6
87°
66°
7
81°
61°
8
80°
64°
9
83°
65°
10
82°
66°
11
85°
67°
12
85°
67°
13
87°
66°
14
85°
65°
15
84°
64°
16
83°
65°
17
80°
65°
18
83°
64°
19
83°
63°
20
84°
64°
21
83°
61°
22
77°
55°
23
76°
53°
24
75°
53°
25
76°
54°
26
77°
56°
27
80°
61°
28
79°
62°
29
76°
61°
30
76°
62°
31
77°
61°
1
81°
58°
2
80°
52°
3
71°
57°
4
73°
60°
5
71°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Waconia
Waconia's August 2026 forecast shows daily high temperatures ranging from 71° to 87°, with overnight lows between 52° and 68°. The average high for August is 81° with an average low of 62°. 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 Waconia. See also: September | October | November.