S
M
T
W
T
F
S
26
92°
56°
27
94°
54°
28
95°
48°
29
92°
52°
30
90°
59°
31
98°
59°
1
102°
47°
2
83°
51°
3
64°
41°
4
78°
34°
5
83°
42°
6
80°
44°
7
80°
38°
8
85°
44°
9
86°
49°
10
82°
43°
11
83°
51°
12
71°
50°
13
66°
54°
14
70°
57°
15
78°
53°
16
85°
50°
17
80°
44°
18
85°
44°
19
87°
51°
20
87°
47°
21
85°
54°
22
90°
48°
23
97°
57°
24
81°
51°
25
84°
49°
26
89°
60°
27
96°
57°
28
91°
55°
29
88°
50°
30
77°
44°
31
79°
48°
1
80°
46°
2
81°
47°
3
81°
47°
4
80°
44°
5
79°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Fort Belknap Reservation
Fort Belknap Reservation's August 2026 forecast shows daily high temperatures ranging from 77° to 96°, with overnight lows between 44° and 60°. The average high for August is 84° with an average low of 49°. 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 Fort Belknap Reservation. See also: September | October | November.