S
M
T
W
T
F
S
26
82°
63°
27
82°
65°
28
82°
61°
29
82°
64°
30
84°
65°
31
82°
59°
1
83°
66°
2
86°
67°
3
83°
60°
4
85°
59°
5
82°
60°
6
83°
59°
7
85°
60°
8
81°
60°
9
81°
65°
10
86°
65°
11
83°
61°
12
86°
64°
13
87°
66°
14
85°
67°
15
82°
66°
16
87°
58°
17
85°
58°
18
80°
59°
19
79°
60°
20
78°
58°
21
80°
57°
22
79°
63°
23
80°
64°
24
84°
65°
25
86°
64°
26
86°
55°
27
82°
55°
28
77°
54°
29
77°
56°
30
78°
60°
31
80°
62°
1
83°
63°
2
84°
60°
3
83°
56°
4
83°
61°
5
82°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Granby
Granby's August 2026 forecast shows daily high temperatures ranging from 77° to 87°, with overnight lows between 54° and 67°. The average high for August is 83° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Granby. See also: September | October | November.
