S
M
T
W
T
F
S
30
64°
52°
31
69°
41°
1
69°
40°
2
57°
40°
3
58°
41°
4
61°
47°
5
65°
41°
6
59°
46°
7
66°
50°
8
67°
49°
9
66°
48°
10
64°
43°
11
56°
43°
12
52°
42°
13
53°
46°
14
56°
40°
15
53°
45°
16
62°
46°
17
63°
44°
18
61°
43°
19
56°
39°
20
56°
35°
21
49°
32°
22
46°
43°
23
53°
37°
24
58°
32°
25
58°
37°
26
47°
38°
27
45°
40°
28
46°
36°
29
47°
40°
30
45°
36°
1
49°
37°
2
45°
36°
3
47°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Wunnummin Lake
Wunnummin Lake's September 2026 forecast shows daily high temperatures ranging from 45° to 69°, with overnight lows between 30° and 52°. The average high for September is 56° with an average low of 41°. 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 Wunnummin Lake. See also: October | November | December.
