S
M
T
W
T
F
S
30
74°
47°
31
71°
41°
1
74°
41°
2
74°
49°
3
71°
56°
4
71°
57°
5
64°
52°
6
68°
45°
7
75°
44°
8
67°
46°
9
68°
59°
10
69°
49°
11
63°
44°
12
73°
54°
13
73°
52°
14
67°
48°
15
65°
53°
16
68°
48°
17
65°
46°
18
60°
46°
19
58°
43°
20
59°
43°
21
58°
41°
22
56°
43°
23
64°
45°
24
65°
46°
25
64°
45°
26
64°
41°
27
58°
36°
28
62°
43°
29
63°
44°
30
65°
46°
1
65°
45°
2
64°
44°
3
62°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sainte-Claire
Sainte-Claire's September 2026 forecast shows daily high temperatures ranging from 56° to 73°, with overnight lows between 36° and 59°. The average high for September is 64° with an average low of 46°. 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 Sainte-Claire. See also: October | November | December.