S
M
T
W
T
F
S
30
79°
66°
31
84°
61°
1
80°
56°
2
80°
49°
3
80°
59°
4
82°
57°
5
84°
64°
6
84°
66°
7
78°
66°
8
80°
61°
9
74°
52°
10
85°
51°
11
77°
51°
12
66°
48°
13
66°
40°
14
59°
43°
15
69°
43°
16
68°
36°
17
70°
46°
18
72°
55°
19
72°
51°
20
68°
45°
21
67°
45°
22
69°
41°
23
68°
47°
24
66°
57°
25
67°
60°
26
64°
60°
27
73°
49°
28
65°
58°
29
68°
52°
30
75°
47°
1
64°
41°
2
64°
45°
3
60°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grand Forks Township
Grand Forks Township's September 2026 forecast shows daily high temperatures ranging from 60° to 75°, with overnight lows between 41° and 58°. The average high for September is 67° with an average low of 48°. 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 Grand Forks Township. See also: October | November | December.
