S
M
T
W
T
F
S
26
85°
53°
27
79°
53°
28
77°
52°
29
75°
55°
30
77°
54°
31
78°
60°
1
82°
61°
2
82°
60°
3
80°
61°
4
77°
63°
5
85°
63°
6
81°
61°
7
86°
61°
8
Hist. Avg.
85°
58°
9
Hist. Avg.
85°
58°
10
Hist. Avg.
85°
57°
11
Hist. Avg.
85°
57°
12
Hist. Avg.
85°
57°
13
Hist. Avg.
84°
57°
14
Hist. Avg.
84°
56°
15
Hist. Avg.
84°
56°
16
Hist. Avg.
84°
56°
17
Hist. Avg.
84°
56°
18
Hist. Avg.
83°
56°
19
Hist. Avg.
83°
55°
20
Hist. Avg.
83°
55°
21
Hist. Avg.
83°
55°
22
Hist. Avg.
82°
54°
23
Hist. Avg.
82°
54°
24
Hist. Avg.
82°
54°
25
Hist. Avg.
82°
54°
26
Hist. Avg.
81°
53°
27
Hist. Avg.
81°
53°
28
Hist. Avg.
81°
53°
29
Hist. Avg.
80°
52°
30
Hist. Avg.
80°
52°
31
Hist. Avg.
80°
52°
1
Hist. Avg.
79°
51°
2
Hist. Avg.
79°
51°
3
Hist. Avg.
79°
51°
4
Hist. Avg.
78°
50°
5
Hist. Avg.
78°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Bismarck
Bismarck's August 2026 forecast shows daily high temperatures ranging from 75° to 86°, with overnight lows between 52° and 63°. The average high for August is 80° with an average low of 58°. 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 Bismarck. See also: September | October | November.
