S
M
T
W
T
F
S
26
86°
65°
27
86°
66°
28
84°
65°
29
84°
64°
30
81°
63°
31
78°
63°
1
78°
62°
2
79°
60°
3
80°
63°
4
77°
60°
5
78°
57°
6
77°
59°
7
80°
61°
8
81°
64°
9
82°
63°
10
83°
63°
11
83°
62°
12
82°
63°
13
83°
64°
14
82°
64°
15
82°
63°
16
77°
61°
17
78°
61°
18
80°
62°
19
82°
63°
20
82°
63°
21
74°
52°
22
73°
53°
23
75°
54°
24
74°
58°
25
75°
61°
26
77°
60°
27
75°
62°
28
83°
62°
29
84°
53°
30
82°
52°
31
75°
54°
1
75°
60°
2
74°
56°
3
80°
61°
4
82°
58°
5
81°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Grand Junction
Grand Junction's August 2026 forecast shows daily high temperatures ranging from 73° to 86°, with overnight lows between 50° and 66°. The average high for August is 80° with an average low of 60°. 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 Junction. See also: September | October | November.
