S
M
T
W
T
F
S
26
89°
69°
27
88°
68°
28
88°
67°
29
85°
66°
30
85°
67°
31
84°
66°
1
85°
67°
2
85°
66°
3
82°
62°
4
84°
66°
5
84°
66°
6
85°
67°
7
85°
66°
8
78°
62°
9
76°
58°
10
78°
62°
11
84°
66°
12
83°
66°
13
82°
65°
14
81°
66°
15
76°
65°
16
76°
64°
17
77°
65°
18
81°
65°
19
83°
64°
20
83°
65°
21
72°
54°
22
74°
54°
23
72°
55°
24
74°
58°
25
82°
55°
26
74°
59°
27
73°
60°
28
74°
58°
29
81°
53°
30
75°
59°
31
75°
61°
1
76°
56°
2
80°
65°
3
83°
61°
4
83°
55°
5
79°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Arnolds Park
Arnolds Park's August 2026 forecast shows daily high temperatures ranging from 72° to 89°, with overnight lows between 52° and 69°. The average high for August is 80° 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 Arnolds Park. See also: September | October | November.