S
M
T
W
T
F
S
26
88°
60°
27
86°
55°
28
86°
54°
29
86°
56°
30
86°
51°
31
89°
48°
1
90°
50°
2
90°
50°
3
90°
43°
4
89°
44°
5
87°
42°
6
89°
39°
7
90°
37°
8
90°
41°
9
88°
43°
10
89°
48°
11
87°
49°
12
82°
53°
13
80°
54°
14
79°
52°
15
79°
48°
16
88°
41°
17
89°
42°
18
84°
39°
19
85°
46°
20
87°
47°
21
88°
47°
22
89°
46°
23
80°
47°
24
83°
49°
25
80°
53°
26
83°
43°
27
84°
47°
28
83°
48°
29
78°
54°
30
77°
51°
31
67°
48°
1
75°
49°
2
77°
43°
3
79°
40°
4
80°
39°
5
82°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Gunnison
Gunnison's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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 Gunnison. See also: September | October | November.