S
M
T
W
T
F
S
26
86°
45°
27
88°
46°
28
84°
48°
29
86°
46°
30
86°
46°
31
93°
48°
1
82°
43°
2
80°
43°
3
84°
47°
4
92°
53°
5
99°
53°
6
100°
54°
7
95°
52°
8
94°
51°
9
89°
50°
10
91°
50°
11
94°
53°
12
91°
52°
13
92°
53°
14
87°
48°
15
89°
54°
16
86°
52°
17
86°
53°
18
89°
54°
19
88°
53°
20
86°
52°
21
83°
50°
22
83°
51°
23
86°
51°
24
81°
50°
25
83°
52°
26
88°
52°
27
88°
51°
28
87°
52°
29
87°
50°
30
80°
51°
31
82°
50°
1
76°
44°
2
76°
43°
3
77°
50°
4
81°
49°
5
77°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Prineville
Prineville's August 2026 forecast shows daily high temperatures ranging from 76° to 100°, with overnight lows between 43° and 54°. The average high for August is 86° with an average low of 50°. 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 Prineville. See also: September | October | November.
