S
M
T
W
T
F
S
30
90°
72°
31
92°
72°
1
92°
70°
2
90°
72°
3
91°
71°
4
93°
72°
5
91°
71°
6
91°
72°
7
90°
70°
8
91°
71°
9
89°
70°
10
87°
70°
11
89°
68°
12
88°
65°
13
88°
66°
14
89°
66°
15
89°
67°
16
88°
68°
17
89°
69°
18
89°
69°
19
88°
68°
20
90°
69°
21
90°
69°
22
89°
68°
23
89°
67°
24
88°
68°
25
87°
68°
26
84°
67°
27
87°
67°
28
86°
66°
29
87°
66°
30
87°
65°
1
86°
65°
2
87°
64°
3
88°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fargo
Fargo's September 2026 forecast shows daily high temperatures ranging from 84° to 93°, with overnight lows between 64° and 72°. The average high for September is 89° with an average low of 68°. 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 Fargo. See also: October | November | December.
