S
M
T
W
T
F
S
26
79°
51°
27
79°
49°
28
80°
48°
29
79°
48°
30
80°
49°
31
81°
49°
1
84°
51°
2
86°
55°
3
87°
56°
4
86°
51°
5
81°
49°
6
80°
48°
7
78°
49°
8
79°
50°
9
Hist. Avg.
83°
51°
10
Hist. Avg.
83°
51°
11
Hist. Avg.
83°
51°
12
Hist. Avg.
83°
51°
13
Hist. Avg.
83°
50°
14
Hist. Avg.
83°
50°
15
Hist. Avg.
83°
50°
16
Hist. Avg.
83°
50°
17
Hist. Avg.
83°
50°
18
Hist. Avg.
83°
49°
19
Hist. Avg.
83°
49°
20
Hist. Avg.
83°
49°
21
Hist. Avg.
83°
48°
22
Hist. Avg.
82°
48°
23
Hist. Avg.
82°
48°
24
Hist. Avg.
82°
48°
25
Hist. Avg.
82°
47°
26
Hist. Avg.
82°
47°
27
Hist. Avg.
82°
47°
28
Hist. Avg.
82°
46°
29
Hist. Avg.
82°
46°
30
Hist. Avg.
82°
46°
31
Hist. Avg.
81°
46°
1
Hist. Avg.
81°
45°
2
Hist. Avg.
81°
45°
3
Hist. Avg.
81°
45°
4
Hist. Avg.
80°
44°
5
Hist. Avg.
80°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Grand Canyon
Grand Canyon's August 2026 forecast shows daily high temperatures ranging from 78° to 87°, with overnight lows between 48° and 56°. The average high for August is 81° with an average low of 50°. 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 Canyon. See also: September | October | November.
