S
M
T
W
T
F
S
26
81°
51°
27
83°
61°
28
66°
55°
29
64°
50°
30
67°
40°
1
64°
44°
2
61°
44°
3
78°
41°
4
79°
58°
5
70°
46°
6
63°
43°
7
68°
39°
8
77°
47°
9
81°
56°
10
70°
49°
11
78°
44°
12
83°
51°
13
75°
51°
14
75°
45°
15
84°
58°
16
80°
68°
17
89°
63°
18
80°
65°
19
79°
62°
20
67°
55°
21
69°
53°
22
68°
61°
23
78°
65°
24
82°
62°
25
83°
65°
26
78°
68°
27
79°
68°
28
83°
65°
29
79°
63°
30
77°
56°
31
78°
60°
1
77°
59°
2
77°
60°
3
80°
62°
4
82°
64°
5
83°
63°
6
83°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Granite City Township
Granite City Township's May 2026 forecast shows daily high temperatures ranging from 77° to 83°, with overnight lows between 56° and 68°. The average high for May is 80° with an average low of 63°. 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 Granite City Township. See also: June | July | August.
