S
M
T
W
T
F
S
30
79°
66°
31
84°
61°
1
80°
56°
2
80°
58°
3
84°
63°
4
85°
64°
5
92°
64°
6
81°
62°
7
76°
67°
8
78°
54°
9
73°
55°
10
74°
54°
11
73°
53°
12
70°
49°
13
69°
50°
14
69°
51°
15
73°
50°
16
75°
52°
17
74°
53°
18
77°
53°
19
75°
50°
20
65°
44°
21
71°
50°
22
68°
49°
23
71°
50°
24
73°
49°
25
65°
44°
26
59°
40°
27
60°
36°
28
58°
45°
29
69°
39°
30
56°
42°
1
61°
44°
2
55°
39°
3
61°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in East Grand Forks
East Grand Forks's September 2026 forecast shows daily high temperatures ranging from 55° to 92°, with overnight lows between 36° and 67°. The average high for September is 71° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in East Grand Forks. See also: October | November | December.
