S
M
T
W
T
F
S
30
70°
51°
31
74°
51°
1
77°
55°
2
79°
57°
3
79°
57°
4
78°
56°
5
77°
54°
6
72°
53°
7
77°
56°
8
77°
56°
9
76°
55°
10
77°
56°
11
76°
55°
12
66°
48°
13
72°
54°
14
74°
52°
15
66°
48°
16
73°
53°
17
75°
54°
18
74°
53°
19
74°
53°
20
73°
52°
21
72°
53°
22
72°
52°
23
69°
45°
24
59°
45°
25
58°
40°
26
61°
40°
27
68°
45°
28
69°
38°
29
58°
37°
30
56°
38°
1
58°
37°
2
61°
44°
3
60°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kaslo
Kaslo's September 2026 forecast shows daily high temperatures ranging from 56° to 79°, with overnight lows between 37° and 57°. The average high for September is 70° with an average low of 50°. 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.
