S
M
T
W
T
F
S
30
82°
57°
31
80°
56°
1
81°
55°
2
80°
54°
3
80°
55°
4
77°
52°
5
79°
50°
6
80°
50°
7
81°
52°
8
79°
50°
9
72°
47°
10
65°
44°
11
67°
47°
12
66°
44°
13
64°
43°
14
62°
41°
15
63°
43°
16
65°
44°
17
66°
47°
18
65°
49°
19
64°
47°
20
64°
43°
21
62°
42°
22
62°
42°
23
66°
42°
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 82°, with overnight lows between 41° and 57°. The average high for September is 71° with an average low of 48°. 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.