S
M
T
W
T
F
S
26
86°
45°
27
81°
48°
28
63°
58°
29
67°
48°
30
69°
47°
31
66°
54°
1
62°
55°
2
69°
56°
3
78°
57°
4
73°
61°
5
71°
58°
6
71°
48°
7
83°
48°
8
68°
52°
9
75°
47°
10
77°
46°
11
N/A
12
73°
56°
13
77°
56°
14
68°
54°
15
67°
47°
16
68°
51°
17
72°
54°
18
70°
51°
19
71°
52°
20
73°
54°
21
71°
53°
22
71°
52°
23
72°
53°
24
70°
49°
25
69°
53°
26
72°
54°
27
72°
53°
28
71°
54°
29
71°
52°
30
69°
51°
31
67°
51°
1
64°
50°
2
64°
50°
3
65°
49°
4
64°
50°
5
64°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Grand Falls-Windsor
Grand Falls-Windsor's August 2026 forecast shows daily high temperatures ranging from 64° to 77°, with overnight lows between 47° and 56°. The average high for August is 69° with an average low of 52°. 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 Grand Falls-Windsor. See also: September | October | November.
