S
M
T
W
T
F
S
26
66°
38°
27
76°
33°
28
74°
37°
29
73°
42°
30
58°
45°
1
64°
45°
2
57°
40°
3
57°
37°
4
67°
44°
5
77°
55°
6
68°
53°
7
61°
40°
8
57°
38°
9
59°
44°
10
62°
45°
11
64°
44°
12
64°
45°
13
62°
45°
14
65°
46°
15
65°
47°
16
66°
45°
17
66°
42°
18
67°
50°
19
71°
51°
20
72°
51°
21
70°
50°
22
72°
47°
23
66°
47°
24
68°
49°
25
68°
46°
26
69°
48°
27
69°
49°
28
68°
53°
29
74°
53°
30
73°
52°
31
74°
50°
1
70°
47°
2
69°
47°
3
69°
48°
4
70°
48°
5
69°
49°
6
70°
48°
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 57° to 77°, with overnight lows between 37° and 55°. The average high for May is 67° with an average low of 47°. 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.
