S
M
T
W
T
F
S
26
84°
66°
27
78°
61°
28
81°
65°
29
82°
63°
30
79°
60°
31
82°
59°
1
78°
60°
2
78°
58°
3
79°
59°
4
78°
58°
5
78°
59°
6
79°
59°
7
79°
60°
8
81°
66°
9
82°
64°
10
83°
64°
11
85°
58°
12
83°
67°
13
86°
59°
14
80°
57°
15
77°
61°
16
78°
61°
17
79°
58°
18
76°
56°
19
78°
58°
20
76°
56°
21
78°
57°
22
74°
55°
23
76°
56°
24
76°
56°
25
77°
62°
26
76°
64°
27
81°
64°
28
84°
60°
29
84°
55°
30
77°
57°
31
76°
55°
1
74°
60°
2
74°
55°
3
75°
51°
4
73°
57°
5
73°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Fort Atkinson
Fort Atkinson's August 2026 forecast shows daily high temperatures ranging from 73° to 86°, with overnight lows between 51° and 67°. The average high for August is 79° with an average low of 59°. 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 Fort Atkinson. See also: September | October | November.
