S
M
T
W
T
F
S
26
52°
34°
27
54°
34°
28
46°
30°
29
50°
21°
30
48°
19°
1
54°
28°
2
64°
23°
3
64°
23°
4
61°
28°
5
48°
32°
6
46°
25°
7
63°
19°
8
68°
32°
9
68°
37°
10
68°
27°
11
77°
28°
12
79°
30°
13
82°
32°
14
75°
41°
15
75°
28°
16
77°
37°
17
57°
34°
18
50°
32°
19
50°
32°
20
55°
34°
21
64°
28°
22
57°
32°
23
70°
28°
24
70°
32°
25
73°
32°
26
66°
41°
27
63°
38°
28
68°
41°
29
68°
37°
30
67°
36°
31
69°
37°
1
68°
36°
2
69°
37°
3
68°
39°
4
68°
41°
5
72°
40°
6
68°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Granby
Granby's May 2026 forecast shows daily high temperatures ranging from 63° to 72°, with overnight lows between 36° and 41°. The average high for May is 68° with an average low of 39°. 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 Granby. See also: June | July | August.
