S
M
T
W
T
F
S
26
61°
42°
27
60°
48°
28
62°
46°
29
50°
34°
30
48°
32°
1
45°
32°
2
56°
44°
3
62°
46°
4
71°
41°
5
54°
37°
6
49°
37°
7
49°
38°
8
61°
45°
9
59°
44°
10
61°
44°
11
60°
46°
12
62°
47°
13
63°
46°
14
55°
36°
15
60°
44°
16
61°
44°
17
61°
51°
18
63°
52°
19
66°
52°
20
70°
53°
21
68°
50°
22
62°
50°
23
64°
46°
24
62°
45°
25
63°
49°
26
64°
54°
27
66°
54°
28
65°
51°
29
65°
49°
30
70°
50°
31
66°
49°
1
66°
53°
2
70°
51°
3
66°
50°
4
68°
50°
5
68°
50°
6
69°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Oshkosh
Oshkosh's May 2026 forecast shows daily high temperatures ranging from 45° to 71°, with overnight lows between 32° and 54°. The average high for May is 62° with an average low of 47°. 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 Oshkosh. See also: June | July | August.
