S
M
T
W
T
F
S
26
79°
58°
27
80°
60°
28
76°
60°
29
76°
59°
30
77°
60°
31
80°
61°
1
80°
60°
2
79°
60°
3
81°
60°
4
81°
59°
5
80°
55°
6
76°
58°
7
75°
53°
8
73°
54°
9
73°
52°
10
74°
52°
11
77°
58°
12
81°
59°
13
81°
58°
14
80°
51°
15
75°
52°
16
76°
58°
17
76°
57°
18
75°
52°
19
74°
51°
20
75°
52°
21
77°
53°
22
80°
54°
23
80°
54°
24
78°
56°
25
81°
56°
26
80°
57°
27
79°
55°
28
80°
57°
29
80°
57°
30
79°
53°
31
74°
47°
1
73°
48°
2
72°
48°
3
72°
49°
4
73°
48°
5
72°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Coupon
Coupon's August 2026 forecast shows daily high temperatures ranging from 72° to 81°, with overnight lows between 47° and 61°. The average high for August is 77° with an average low of 55°. 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 Coupon. See also: September | October | November.