S
M
T
W
T
F
S
30
85°
66°
31
83°
58°
1
83°
63°
2
80°
65°
3
88°
68°
4
90°
70°
5
89°
67°
6
84°
62°
7
77°
60°
8
76°
58°
9
75°
56°
10
78°
55°
11
74°
50°
12
75°
51°
13
74°
52°
14
72°
49°
15
77°
54°
16
74°
53°
17
76°
55°
18
75°
54°
19
74°
52°
20
75°
54°
21
76°
54°
22
76°
53°
23
75°
54°
24
77°
54°
25
76°
53°
26
75°
53°
27
76°
52°
28
75°
52°
29
74°
51°
30
75°
53°
1
75°
53°
2
74°
51°
3
73°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Buffalo Lake
Buffalo Lake's September 2026 forecast shows daily high temperatures ranging from 72° to 90°, with overnight lows between 49° and 70°. The average high for September is 77° 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 September weather will actually feel in Buffalo Lake. See also: October | November | December.