S
M
T
W
T
F
S
30
65°
38°
31
63°
44°
1
64°
44°
2
63°
45°
3
62°
43°
4
60°
38°
5
57°
33°
6
54°
34°
7
55°
33°
8
54°
36°
9
54°
33°
10
53°
34°
11
54°
34°
12
53°
37°
13
52°
33°
14
52°
33°
15
51°
34°
16
51°
36°
17
50°
37°
18
52°
38°
19
49°
38°
20
Hist. Avg.
52°
36°
21
Hist. Avg.
52°
35°
22
Hist. Avg.
51°
34°
23
Hist. Avg.
52°
34°
24
Hist. Avg.
50°
34°
25
Hist. Avg.
50°
34°
26
Hist. Avg.
50°
32°
27
Hist. Avg.
49°
32°
28
Hist. Avg.
49°
32°
29
Hist. Avg.
48°
33°
30
Hist. Avg.
49°
35°
1
Hist. Avg.
48°
34°
2
Hist. Avg.
46°
32°
3
Hist. Avg.
45°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Whitehorse
Whitehorse's September 2026 forecast shows daily high temperatures ranging from 49° to 65°, with overnight lows between 33° and 45°. The average high for September is 56° with an average low of 37°. 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 Whitehorse. See also: October | November | December.
