S
M
T
W
T
F
S
30
84°
68°
31
84°
63°
1
81°
60°
2
82°
63°
3
87°
66°
4
90°
70°
5
92°
67°
6
86°
62°
7
75°
64°
8
76°
57°
9
75°
56°
10
76°
59°
11
73°
51°
12
74°
52°
13
73°
53°
14
72°
50°
15
76°
55°
16
73°
55°
17
75°
57°
18
73°
55°
19
70°
54°
20
74°
55°
21
76°
54°
22
74°
55°
23
74°
55°
24
76°
56°
25
75°
55°
26
75°
54°
27
74°
53°
28
74°
53°
29
73°
52°
30
73°
53°
1
74°
53°
2
73°
51°
3
71°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fergus Falls
Fergus Falls's September 2026 forecast shows daily high temperatures ranging from 70° to 92°, with overnight lows between 50° and 70°. The average high for September is 76° with an average low of 56°. 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 Fergus Falls. See also: October | November | December.
