S
M
T
W
T
F
S
26
54°
35°
27
54°
37°
28
56°
45°
29
64°
48°
30
66°
47°
1
63°
44°
2
56°
43°
3
56°
41°
4
57°
39°
5
57°
48°
6
59°
49°
7
69°
50°
8
69°
47°
9
59°
44°
10
60°
50°
11
61°
48°
12
66°
50°
13
67°
51°
14
68°
51°
15
72°
55°
16
73°
53°
17
71°
51°
18
63°
50°
19
64°
50°
20
68°
55°
21
69°
54°
22
68°
47°
23
69°
48°
24
71°
48°
25
73°
50°
26
75°
52°
27
78°
53°
28
78°
55°
29
79°
53°
30
80°
53°
31
78°
55°
1
79°
57°
2
80°
52°
3
74°
60°
4
80°
61°
5
82°
62°
6
82°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Fort Atkinson
Fort Atkinson's May 2026 forecast shows daily high temperatures ranging from 54° to 82°, with overnight lows between 35° and 62°. The average high for May is 68° with an average low of 50°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Fort Atkinson. See also: June | July | August.
