S
M
T
W
T
F
S
26
68°
28°
27
71°
31°
28
64°
47°
29
53°
39°
30
52°
32°
1
49°
25°
2
47°
35°
3
58°
29°
4
71°
42°
5
64°
42°
6
54°
30°
7
50°
37°
8
54°
36°
9
67°
36°
10
50°
36°
11
51°
30°
12
55°
23°
13
48°
42°
14
49°
40°
15
70°
35°
16
68°
43°
17
72°
49°
18
77°
50°
19
85°
63°
20
67°
41°
21
60°
33°
22
68°
30°
23
65°
37°
24
54°
48°
25
70°
52°
26
86°
48°
27
72°
54°
28
70°
49°
29
66°
40°
30
69°
46°
31
70°
41°
1
69°
39°
2
73°
43°
3
77°
49°
4
78°
53°
5
77°
54°
6
70°
51°
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 66° to 78°, with overnight lows between 39° and 54°. The average high for May is 72° with an average low of 46°. 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.
