S
M
T
W
T
F
S
26
101°
70°
27
94°
67°
28
91°
64°
29
97°
70°
30
90°
68°
31
87°
64°
1
89°
56°
2
91°
63°
3
87°
57°
4
76°
53°
5
84°
55°
6
89°
60°
7
80°
56°
8
87°
52°
9
80°
57°
10
83°
51°
11
87°
59°
12
86°
60°
13
84°
62°
14
87°
58°
15
80°
64°
16
82°
57°
17
91°
56°
18
79°
54°
19
83°
62°
20
85°
54°
21
84°
54°
22
80°
50°
23
81°
59°
24
85°
61°
25
83°
52°
26
79°
53°
27
80°
56°
28
81°
58°
29
85°
57°
30
83°
58°
31
81°
57°
1
77°
51°
2
70°
50°
3
71°
54°
4
78°
57°
5
75°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Casselton
Casselton's August 2026 forecast shows daily high temperatures ranging from 70° to 85°, with overnight lows between 50° and 62°. The average high for August is 80° with an average low of 56°. 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 Casselton. See also: September | October | November.
