S
M
T
W
T
F
S
26
79°
55°
27
82°
57°
28
63°
50°
29
61°
45°
30
63°
43°
1
63°
43°
2
63°
41°
3
79°
43°
4
79°
61°
5
61°
45°
6
61°
45°
7
66°
37°
8
77°
52°
9
81°
50°
10
68°
48°
11
73°
43°
12
77°
54°
13
73°
57°
14
77°
52°
15
82°
59°
16
86°
69°
17
85°
71°
18
84°
66°
19
70°
52°
20
64°
55°
21
74°
58°
22
76°
63°
23
81°
66°
24
83°
67°
25
81°
65°
26
82°
68°
27
82°
67°
28
83°
66°
29
81°
61°
30
81°
66°
31
84°
67°
1
85°
67°
2
84°
66°
3
78°
63°
4
78°
61°
5
81°
67°
6
84°
68°
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 64° to 86°, with overnight lows between 52° and 71°. The average high for May is 80° with an average low of 65°. 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.
