S
M
T
W
T
F
S
26
93°
59°
27
92°
58°
28
93°
59°
29
93°
59°
30
92°
58°
31
93°
59°
1
94°
61°
2
93°
60°
3
93°
59°
4
92°
58°
5
93°
59°
6
91°
58°
7
83°
57°
8
89°
58°
9
91°
58°
10
91°
57°
11
90°
58°
12
89°
56°
13
87°
55°
14
90°
56°
15
90°
57°
16
89°
57°
17
90°
54°
18
90°
54°
19
89°
53°
20
87°
48°
21
82°
51°
22
83°
52°
23
87°
53°
24
88°
51°
25
80°
53°
26
85°
53°
27
87°
52°
28
85°
51°
29
81°
50°
30
84°
51°
31
85°
49°
1
86°
50°
2
78°
48°
3
77°
47°
4
79°
46°
5
76°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Powder River
Powder River's August 2026 forecast shows daily high temperatures ranging from 76° to 94°, with overnight lows between 42° and 61°. The average high for August is 88° with an average low of 54°. 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 Powder River. See also: September | October | November.