S
M
T
W
T
F
S
26
66°
38°
27
76°
33°
28
74°
37°
29
73°
42°
30
58°
45°
1
65°
39°
2
58°
44°
3
57°
37°
4
78°
34°
5
88°
47°
6
70°
47°
7
64°
41°
8
60°
39°
9
58°
45°
10
73°
48°
11
59°
44°
12
61°
41°
13
59°
48°
14
67°
46°
15
69°
50°
16
67°
45°
17
66°
47°
18
64°
46°
19
70°
41°
20
65°
43°
21
66°
42°
22
66°
44°
23
67°
44°
24
67°
47°
25
71°
51°
26
75°
52°
27
69°
50°
28
70°
46°
29
68°
45°
30
71°
50°
31
77°
54°
1
76°
54°
2
74°
51°
3
74°
52°
4
78°
55°
5
78°
55°
6
78°
56°
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 58° to 78°, with overnight lows between 39° and 56°. The average high for May is 69° 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.
