S
M
T
W
T
F
S
30
83°
50°
31
82°
45°
1
72°
43°
2
66°
41°
3
67°
42°
4
69°
43°
5
70°
48°
6
78°
55°
7
78°
43°
8
77°
43°
9
69°
44°
10
67°
41°
11
67°
46°
12
73°
40°
13
65°
38°
14
63°
47°
15
68°
50°
16
74°
43°
17
67°
44°
18
66°
48°
19
73°
39°
20
65°
36°
21
60°
40°
22
60°
48°
23
66°
36°
24
71°
36°
25
59°
38°
26
58°
43°
27
63°
44°
28
68°
46°
29
61°
42°
30
69°
35°
1
64°
33°
2
54°
38°
3
55°
32°
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 83°, with overnight lows between 32° and 55°. The average high for September is 68° with an average low of 42°. 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.