S
M
T
W
T
F
S
26
66°
43°
27
68°
52°
28
66°
54°
29
55°
39°
30
57°
37°
1
48°
34°
2
55°
30°
3
65°
46°
4
76°
48°
5
54°
41°
6
54°
40°
7
56°
41°
8
57°
42°
9
62°
43°
10
60°
47°
11
61°
45°
12
64°
48°
13
67°
49°
14
67°
49°
15
68°
50°
16
72°
50°
17
71°
53°
18
66°
51°
19
72°
56°
20
70°
55°
21
70°
46°
22
66°
46°
23
65°
47°
24
67°
47°
25
67°
49°
26
68°
48°
27
67°
49°
28
68°
49°
29
69°
53°
30
70°
59°
31
76°
54°
1
71°
54°
2
74°
58°
3
76°
60°
4
78°
60°
5
79°
61°
6
81°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Griffith
Griffith's May 2026 forecast shows daily high temperatures ranging from 54° to 81°, with overnight lows between 40° 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 Griffith. See also: June | July | August.
