S
M
T
W
T
F
S
26
89°
41°
27
89°
41°
28
90°
43°
29
92°
45°
30
93°
46°
31
95°
47°
1
95°
46°
2
92°
46°
3
91°
48°
4
97°
43°
5
98°
47°
6
99°
45°
7
101°
47°
8
100°
49°
9
98°
46°
10
97°
46°
11
94°
45°
12
91°
46°
13
86°
47°
14
81°
49°
15
84°
49°
16
87°
53°
17
84°
50°
18
86°
52°
19
90°
54°
20
91°
53°
21
89°
52°
22
87°
54°
23
89°
55°
24
90°
57°
25
89°
56°
26
90°
55°
27
88°
50°
28
83°
54°
29
84°
54°
30
85°
53°
31
86°
55°
1
85°
55°
2
82°
53°
3
84°
54°
4
83°
53°
5
82°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Surprise Valley
Surprise Valley's August 2026 forecast shows daily high temperatures ranging from 81° to 91°, with overnight lows between 49° and 57°. The average high for August is 86° with an average low of 53°. 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 Surprise Valley. See also: September | October | November.
