S
M
T
W
T
F
S
26
82°
64°
27
80°
64°
28
85°
65°
29
85°
65°
30
84°
64°
31
82°
65°
1
83°
65°
2
84°
66°
3
84°
65°
4
83°
64°
5
83°
64°
6
84°
63°
7
85°
63°
8
77°
57°
9
76°
58°
10
76°
60°
11
79°
64°
12
82°
64°
13
83°
65°
14
83°
64°
15
82°
62°
16
76°
58°
17
77°
55°
18
77°
61°
19
80°
62°
20
84°
61°
21
83°
62°
22
82°
61°
23
81°
54°
24
75°
54°
25
75°
55°
26
76°
54°
27
76°
54°
28
77°
53°
29
77°
54°
30
81°
57°
31
81°
60°
1
79°
60°
2
81°
55°
3
81°
50°
4
73°
51°
5
72°
58°
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 72° to 85°, 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.
