S
M
T
W
T
F
S
30
66°
52°
31
79°
52°
1
79°
46°
2
64°
50°
3
64°
48°
4
63°
48°
5
70°
43°
6
72°
52°
7
55°
52°
8
63°
52°
9
73°
48°
10
77°
54°
11
70°
52°
12
72°
50°
13
59°
50°
14
57°
48°
15
59°
50°
16
73°
43°
17
78°
46°
18
79°
49°
19
78°
47°
20
79°
49°
21
78°
48°
22
75°
46°
23
71°
48°
24
72°
49°
25
69°
48°
26
66°
47°
27
66°
48°
28
65°
45°
29
67°
40°
30
59°
35°
1
58°
34°
2
66°
43°
3
63°
40°
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 58° to 79°, with overnight lows between 34° and 49°. The average high for September is 70° with an average low of 45°. 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.
