S
M
T
W
T
F
S
26
84°
55°
27
85°
56°
28
80°
68°
29
79°
66°
30
79°
64°
31
81°
61°
1
89°
64°
2
85°
71°
3
81°
64°
4
86°
60°
5
86°
70°
6
88°
71°
7
89°
72°
8
91°
69°
9
90°
65°
10
90°
68°
11
83°
64°
12
84°
63°
13
81°
63°
14
82°
62°
15
80°
62°
16
80°
59°
17
81°
61°
18
79°
61°
19
78°
64°
20
80°
59°
21
78°
57°
22
78°
61°
23
84°
64°
24
85°
65°
25
84°
64°
26
80°
62°
27
77°
63°
28
77°
64°
29
81°
62°
30
82°
63°
31
82°
62°
1
81°
56°
2
74°
54°
3
74°
55°
4
75°
54°
5
74°
53°
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 74° to 91°, with overnight lows between 53° and 72°. The average high for August is 82° with an average low of 62°. 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.
