S
M
T
W
T
F
S
30
71°
50°
31
72°
51°
1
73°
48°
2
72°
49°
3
79°
50°
4
80°
54°
5
81°
52°
6
73°
47°
7
70°
51°
8
72°
50°
9
67°
51°
10
68°
53°
11
66°
55°
12
67°
53°
13
67°
52°
14
66°
46°
15
62°
41°
16
64°
43°
17
71°
45°
18
65°
42°
19
Hist. Avg.
67°
44°
20
Hist. Avg.
66°
44°
21
Hist. Avg.
66°
43°
22
Hist. Avg.
65°
43°
23
Hist. Avg.
65°
43°
24
Hist. Avg.
64°
43°
25
Hist. Avg.
64°
42°
26
Hist. Avg.
63°
42°
27
Hist. Avg.
63°
42°
28
Hist. Avg.
62°
42°
29
Hist. Avg.
62°
41°
30
Hist. Avg.
61°
41°
1
Hist. Avg.
61°
41°
2
Hist. Avg.
60°
41°
3
Hist. Avg.
60°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Kaslo
Kaslo's September 2026 forecast shows daily high temperatures ranging from 62° to 81°, with overnight lows between 41° and 55°. The average high for September is 70° with an average low of 49°. 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 Kaslo. See also: October | November | December.