S
M
T
W
T
F
S
26
55°
36°
27
65°
34°
28
66°
35°
29
62°
42°
30
52°
46°
1
59°
43°
2
54°
46°
3
56°
38°
4
63°
36°
5
61°
46°
6
60°
53°
7
64°
49°
8
61°
46°
9
58°
47°
10
61°
51°
11
63°
41°
12
61°
46°
13
59°
49°
14
59°
50°
15
60°
46°
16
69°
42°
17
90°
55°
18
79°
59°
19
88°
63°
20
91°
50°
21
70°
43°
22
64°
47°
23
65°
54°
24
70°
52°
25
71°
53°
26
69°
54°
27
72°
51°
28
74°
55°
29
75°
56°
30
77°
52°
31
70°
56°
1
71°
53°
2
69°
53°
3
68°
54°
4
69°
57°
5
71°
57°
6
76°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Griswold
Griswold's May 2026 forecast shows daily high temperatures ranging from 64° to 91°, with overnight lows between 43° and 63°. The average high for May is 74° with an average low of 54°. 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 Griswold. See also: June | July | August.
