S
M
T
W
T
F
S
30
80°
55°
31
83°
55°
1
78°
51°
2
72°
46°
3
72°
46°
4
74°
51°
5
78°
49°
6
70°
42°
7
70°
44°
8
71°
44°
9
74°
47°
10
79°
52°
11
80°
51°
12
79°
50°
13
72°
45°
14
71°
42°
15
74°
46°
16
74°
45°
17
77°
44°
18
78°
47°
19
79°
46°
20
77°
42°
21
73°
41°
22
73°
43°
23
77°
46°
24
78°
45°
25
73°
47°
26
75°
49°
27
74°
50°
28
76°
45°
29
63°
41°
30
62°
46°
1
62°
41°
2
59°
40°
3
57°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Bonners Ferry
Bonners Ferry's September 2026 forecast shows daily high temperatures ranging from 57° to 83°, with overnight lows between 39° and 55°. The average high for September is 73° 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 Bonners Ferry. See also: October | November | December.
