S
M
T
W
T
F
S
26
66°
41°
27
70°
51°
28
63°
49°
29
59°
35°
30
59°
33°
1
51°
32°
2
58°
28°
3
70°
41°
4
81°
42°
5
57°
43°
6
58°
32°
7
63°
28°
8
71°
38°
9
75°
42°
10
67°
37°
11
62°
37°
12
71°
37°
13
65°
36°
14
74°
32°
15
78°
51°
16
84°
59°
17
87°
62°
18
79°
64°
19
79°
54°
20
64°
44°
21
63°
45°
22
71°
51°
23
76°
60°
24
83°
55°
25
85°
59°
26
87°
65°
27
81°
61°
28
81°
57°
29
78°
54°
30
72°
51°
31
73°
55°
1
78°
57°
2
79°
58°
3
80°
59°
4
79°
60°
5
77°
55°
6
79°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Oswego Township
Oswego Township's May 2026 forecast shows daily high temperatures ranging from 72° to 87°, with overnight lows between 51° and 65°. The average high for May is 79° with an average low of 58°. 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 Oswego Township. See also: June | July | August.