S
M
T
W
T
F
S
30
65°
46°
31
65°
44°
1
64°
44°
2
65°
45°
3
67°
46°
4
66°
47°
5
64°
46°
6
63°
45°
7
61°
44°
8
62°
42°
9
62°
42°
10
65°
45°
11
62°
42°
12
65°
41°
13
63°
41°
14
66°
47°
15
68°
46°
16
65°
43°
17
68°
45°
18
68°
41°
19
67°
47°
20
68°
47°
21
67°
42°
22
66°
44°
23
62°
39°
24
58°
38°
25
57°
41°
26
62°
37°
27
57°
36°
28
53°
35°
29
52°
34°
30
54°
40°
1
52°
34°
2
Hist. Avg.
56°
39°
3
Hist. Avg.
56°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fossambault-sur-le-Lac
Fossambault-sur-le-Lac's September 2026 forecast shows daily high temperatures ranging from 52° to 68°, with overnight lows between 34° and 47°. The average high for September is 63° with an average low of 42°. 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 Fossambault-sur-le-Lac. See also: October | November | December.
