S
M
T
W
T
F
S
26
90°
66°
27
87°
71°
28
86°
64°
29
89°
65°
30
68°
66°
31
81°
59°
1
82°
54°
2
84°
63°
3
81°
55°
4
70°
48°
5
79°
46°
6
82°
55°
7
75°
50°
8
79°
46°
9
74°
50°
10
76°
56°
11
76°
55°
12
77°
50°
13
72°
50°
14
73°
52°
15
74°
51°
16
73°
54°
17
76°
55°
18
77°
54°
19
74°
53°
20
74°
52°
21
78°
56°
22
77°
52°
23
81°
58°
24
79°
57°
25
79°
58°
26
81°
57°
27
80°
56°
28
77°
55°
29
71°
51°
30
70°
55°
31
72°
55°
1
71°
54°
2
69°
55°
3
74°
55°
4
75°
54°
5
74°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Fosston
Fosston's August 2026 forecast shows daily high temperatures ranging from 69° to 81°, with overnight lows between 50° and 58°. The average high for August is 75° 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 Fosston. See also: September | October | November.