S
M
T
W
T
F
S
26
83°
46°
27
82°
45°
28
83°
46°
29
77°
48°
30
75°
44°
31
78°
45°
1
81°
47°
2
82°
46°
3
83°
48°
4
82°
46°
5
79°
44°
6
82°
42°
7
79°
43°
8
80°
44°
9
74°
45°
10
73°
44°
11
72°
43°
12
73°
38°
13
Hist. Avg.
78°
44°
14
Hist. Avg.
78°
43°
15
Hist. Avg.
77°
43°
16
Hist. Avg.
77°
43°
17
Hist. Avg.
77°
43°
18
Hist. Avg.
77°
42°
19
Hist. Avg.
77°
42°
20
Hist. Avg.
76°
42°
21
Hist. Avg.
76°
42°
22
Hist. Avg.
76°
41°
23
Hist. Avg.
76°
41°
24
Hist. Avg.
76°
41°
25
Hist. Avg.
76°
41°
26
Hist. Avg.
75°
40°
27
Hist. Avg.
75°
40°
28
Hist. Avg.
75°
40°
29
Hist. Avg.
75°
40°
30
Hist. Avg.
74°
39°
31
Hist. Avg.
74°
39°
1
Hist. Avg.
74°
39°
2
Hist. Avg.
74°
38°
3
Hist. Avg.
74°
38°
4
Hist. Avg.
73°
38°
5
Hist. Avg.
73°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Gunnison
Gunnison's August 2026 forecast shows daily high temperatures ranging from 72° to 83°, with overnight lows between 38° and 48°. The average high for August is 79° with an average low of 45°. 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.