S
M
T
W
T
F
S
26
84°
69°
27
87°
70°
28
88°
70°
29
83°
69°
30
84°
70°
31
89°
71°
1
88°
70°
2
89°
71°
3
89°
71°
4
90°
70°
5
88°
71°
6
88°
71°
7
87°
70°
8
88°
70°
9
84°
66°
10
82°
65°
11
82°
65°
12
85°
70°
13
87°
70°
14
86°
69°
15
87°
70°
16
87°
69°
17
89°
68°
18
89°
67°
19
87°
67°
20
88°
69°
21
89°
70°
22
88°
69°
23
88°
69°
24
85°
68°
25
83°
64°
26
82°
63°
27
82°
66°
28
81°
67°
29
80°
64°
30
80°
62°
31
81°
62°
1
84°
64°
2
86°
67°
3
84°
67°
4
86°
63°
5
83°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Granite Falls
Granite Falls's August 2026 forecast shows daily high temperatures ranging from 80° to 90°, with overnight lows between 61° and 71°. The average high for August is 86° with an average low of 68°. 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 Granite Falls. See also: September | October | November.
