S
M
T
W
T
F
S
30
68°
37°
31
68°
36°
1
67°
41°
2
67°
45°
3
65°
41°
4
65°
40°
5
66°
38°
6
64°
35°
7
64°
36°
8
64°
37°
9
65°
36°
10
67°
37°
11
66°
40°
12
67°
36°
13
Hist. Avg.
77°
46°
14
Hist. Avg.
77°
46°
15
Hist. Avg.
77°
46°
16
Hist. Avg.
76°
45°
17
Hist. Avg.
76°
45°
18
Hist. Avg.
75°
45°
19
Hist. Avg.
74°
45°
20
Hist. Avg.
74°
44°
21
Hist. Avg.
73°
44°
22
Hist. Avg.
73°
44°
23
Hist. Avg.
72°
44°
24
Hist. Avg.
72°
43°
25
Hist. Avg.
71°
43°
26
Hist. Avg.
71°
43°
27
Hist. Avg.
70°
43°
28
Hist. Avg.
69°
42°
29
Hist. Avg.
69°
42°
30
Hist. Avg.
68°
42°
1
Hist. Avg.
68°
42°
2
Hist. Avg.
67°
41°
3
Hist. Avg.
66°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Rossland
Rossland's September 2026 forecast shows daily high temperatures ranging from 64° to 68°, with overnight lows between 35° and 45°. The average high for September is 66° with an average low of 38°. 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 Rossland. See also: October | November | December.