S
M
T
W
T
F
S
26
97°
67°
27
89°
69°
28
91°
62°
29
99°
68°
30
83°
67°
31
84°
61°
1
86°
57°
2
94°
63°
3
76°
58°
4
73°
52°
5
83°
48°
6
88°
59°
7
77°
51°
8
83°
50°
9
77°
52°
10
76°
50°
11
81°
56°
12
82°
55°
13
81°
60°
14
84°
55°
15
76°
63°
16
80°
54°
17
82°
54°
18
76°
48°
19
81°
58°
20
80°
56°
21
81°
51°
22
78°
50°
23
82°
57°
24
86°
59°
25
83°
55°
26
79°
53°
27
80°
58°
28
84°
60°
29
83°
57°
30
81°
56°
31
79°
54°
1
80°
50°
2
70°
50°
3
72°
55°
4
79°
56°
5
77°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in East Grand Forks
East Grand Forks's August 2026 forecast shows daily high temperatures ranging from 70° to 86°, with overnight lows between 50° and 60°. The average high for August is 80° with an average low of 55°. 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 East Grand Forks. See also: September | October | November.