S
M
T
W
T
F
S
30
64°
51°
31
63°
52°
1
64°
49°
2
64°
47°
3
63°
52°
4
61°
52°
5
64°
51°
6
65°
50°
7
64°
46°
8
63°
48°
9
63°
46°
10
62°
49°
11
61°
50°
12
62°
49°
13
60°
46°
14
Hist. Avg.
59°
46°
15
Hist. Avg.
59°
46°
16
Hist. Avg.
59°
46°
17
Hist. Avg.
58°
46°
18
Hist. Avg.
58°
46°
19
Hist. Avg.
58°
45°
20
Hist. Avg.
58°
45°
21
Hist. Avg.
58°
45°
22
Hist. Avg.
57°
45°
23
Hist. Avg.
57°
45°
24
Hist. Avg.
57°
45°
25
Hist. Avg.
57°
45°
26
Hist. Avg.
56°
45°
27
Hist. Avg.
56°
44°
28
Hist. Avg.
56°
44°
29
Hist. Avg.
56°
44°
30
Hist. Avg.
56°
44°
1
Hist. Avg.
55°
44°
2
Hist. Avg.
55°
44°
3
Hist. Avg.
55°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Selkirk
Selkirk's September 2026 forecast shows daily high temperatures ranging from 60° to 65°, with overnight lows between 46° and 52°. The average high for September is 63° 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 Selkirk. See also: October | November | December.