S
M
T
W
T
F
S
26
77°
56°
27
78°
55°
28
75°
54°
29
68°
54°
30
75°
55°
31
75°
55°
1
74°
54°
2
70°
51°
3
69°
50°
4
72°
47°
5
69°
47°
6
72°
51°
7
76°
52°
8
75°
49°
9
67°
50°
10
73°
52°
11
75°
51°
12
76°
51°
13
75°
44°
14
67°
44°
15
74°
49°
16
75°
52°
17
76°
52°
18
75°
51°
19
74°
51°
20
70°
47°
21
68°
46°
22
64°
43°
23
63°
45°
24
66°
51°
25
65°
51°
26
68°
49°
27
69°
39°
28
65°
41°
29
64°
43°
30
69°
45°
31
71°
48°
1
71°
50°
2
72°
50°
3
72°
48°
4
70°
47°
5
64°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Grande Prairie
Grande Prairie's August 2026 forecast shows daily high temperatures ranging from 63° to 78°, with overnight lows between 39° and 56°. The average high for August is 71° with an average low of 49°. 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 Grande Prairie. See also: September | October | November.
