S
M
T
W
T
F
S
30
68°
43°
31
68°
43°
1
70°
48°
2
74°
47°
3
77°
53°
4
77°
49°
5
67°
44°
6
66°
42°
7
66°
47°
8
70°
49°
9
72°
48°
10
72°
42°
11
68°
44°
12
67°
45°
13
66°
40°
14
62°
38°
15
60°
37°
16
59°
36°
17
59°
39°
18
61°
43°
19
63°
46°
20
69°
43°
21
66°
38°
22
58°
36°
23
56°
37°
24
55°
36°
25
55°
35°
26
57°
37°
27
57°
38°
28
58°
40°
29
66°
42°
30
66°
35°
1
Hist. Avg.
58°
37°
2
Hist. Avg.
58°
36°
3
Hist. Avg.
58°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kootenay Crossing
Kootenay Crossing's September 2026 forecast shows daily high temperatures ranging from 55° to 77°, with overnight lows between 35° and 53°. The average high for September is 65° 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 Kootenay Crossing. See also: October | November | December.
