S
M
T
W
T
F
S
26
82°
58°
27
82°
57°
28
81°
58°
29
82°
55°
30
79°
54°
31
76°
53°
1
74°
53°
2
74°
56°
3
75°
57°
4
77°
59°
5
80°
59°
6
79°
58°
7
80°
59°
8
79°
58°
9
78°
57°
10
75°
56°
11
75°
56°
12
77°
53°
13
75°
53°
14
74°
54°
15
76°
54°
16
75°
56°
17
75°
54°
18
76°
53°
19
73°
53°
20
75°
54°
21
75°
54°
22
74°
53°
23
80°
57°
24
76°
54°
25
75°
55°
26
Hist. Avg.
69°
60°
27
Hist. Avg.
69°
60°
28
Hist. Avg.
69°
59°
29
Hist. Avg.
69°
59°
30
Hist. Avg.
69°
59°
31
Hist. Avg.
68°
59°
1
Hist. Avg.
68°
59°
2
Hist. Avg.
68°
59°
3
Hist. Avg.
68°
58°
4
Hist. Avg.
68°
58°
5
Hist. Avg.
68°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Summerhaven
Summerhaven's August 2026 forecast shows daily high temperatures ranging from 73° to 82°, with overnight lows between 53° and 59°. 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 Summerhaven. See also: September | October | November.