S
M
T
W
T
F
S
26
75°
52°
27
74°
50°
28
74°
52°
29
75°
50°
30
74°
50°
31
78°
53°
1
80°
52°
2
80°
59°
3
79°
59°
4
77°
57°
5
81°
53°
6
79°
58°
7
81°
58°
8
80°
57°
9
81°
61°
10
80°
59°
11
81°
49°
12
79°
49°
13
76°
56°
14
79°
54°
15
72°
56°
16
75°
50°
17
Hist. Avg.
76°
53°
18
Hist. Avg.
75°
52°
19
Hist. Avg.
75°
52°
20
Hist. Avg.
75°
52°
21
Hist. Avg.
75°
52°
22
Hist. Avg.
74°
52°
23
Hist. Avg.
74°
51°
24
Hist. Avg.
74°
51°
25
Hist. Avg.
73°
51°
26
Hist. Avg.
73°
51°
27
Hist. Avg.
73°
50°
28
Hist. Avg.
73°
50°
29
Hist. Avg.
72°
50°
30
Hist. Avg.
72°
50°
31
Hist. Avg.
72°
50°
1
Hist. Avg.
71°
49°
2
Hist. Avg.
71°
49°
3
Hist. Avg.
71°
49°
4
Hist. Avg.
70°
49°
5
Hist. Avg.
70°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Rupert
Rupert's August 2026 forecast shows daily high temperatures ranging from 72° to 81°, with overnight lows between 49° and 61°. The average high for August is 78° 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 Rupert. See also: September | October | November.