S
M
T
W
T
F
S
30
80°
61°
31
81°
54°
1
78°
52°
2
81°
52°
3
70°
57°
4
81°
52°
5
84°
64°
6
79°
66°
7
73°
64°
8
72°
57°
9
73°
55°
10
81°
50°
11
72°
50°
12
61°
43°
13
64°
36°
14
64°
52°
15
61°
41°
16
64°
39°
17
66°
45°
18
73°
55°
19
64°
54°
20
61°
46°
21
66°
46°
22
61°
45°
23
59°
55°
24
70°
53°
25
69°
58°
26
66°
43°
27
66°
49°
28
60°
45°
29
66°
46°
30
65°
43°
1
62°
42°
2
61°
40°
3
54°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Bottineau
Bottineau's September 2026 forecast shows daily high temperatures ranging from 54° to 70°, with overnight lows between 38° and 58°. The average high for September is 64° with an average low of 46°. 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 Bottineau. See also: October | November | December.