S
M
T
W
T
F
S
30
59°
33°
31
57°
36°
1
57°
37°
2
56°
37°
3
55°
34°
4
55°
32°
5
56°
33°
6
57°
37°
7
55°
33°
8
58°
39°
9
60°
36°
10
55°
33°
11
57°
32°
12
53°
32°
13
53°
36°
14
52°
31°
15
51°
31°
16
Hist. Avg.
54°
33°
17
Hist. Avg.
54°
33°
18
Hist. Avg.
53°
32°
19
Hist. Avg.
53°
32°
20
Hist. Avg.
53°
32°
21
Hist. Avg.
52°
32°
22
Hist. Avg.
52°
32°
23
Hist. Avg.
51°
32°
24
Hist. Avg.
51°
31°
25
Hist. Avg.
51°
31°
26
Hist. Avg.
50°
31°
27
Hist. Avg.
50°
31°
28
Hist. Avg.
49°
31°
29
Hist. Avg.
49°
31°
30
Hist. Avg.
48°
30°
1
Hist. Avg.
48°
30°
2
Hist. Avg.
48°
30°
3
Hist. Avg.
47°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Dease Lake
Dease Lake's September 2026 forecast shows daily high temperatures ranging from 51° to 60°, with overnight lows between 31° and 39°. The average high for September is 56° with an average low of 34°. 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 Dease Lake. See also: October | November | December.
