S
M
T
W
T
F
S
30
71°
38°
31
61°
39°
1
63°
48°
2
69°
48°
3
70°
47°
4
69°
46°
5
69°
40°
6
64°
40°
7
59°
38°
8
58°
41°
9
57°
40°
10
57°
39°
11
58°
35°
12
56°
37°
13
56°
42°
14
55°
36°
15
59°
39°
16
56°
41°
17
56°
45°
18
61°
34°
19
56°
32°
20
54°
32°
21
53°
31°
22
51°
30°
23
50°
32°
24
50°
33°
25
51°
31°
26
51°
31°
27
52°
33°
28
52°
35°
29
53°
34°
30
54°
37°
1
57°
39°
2
58°
35°
3
55°
38°
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 50° to 71°, with overnight lows between 30° and 48°. The average high for September is 58° with an average low of 38°. 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.