S
M
T
W
T
F
S
30
90°
62°
31
93°
65°
1
96°
70°
2
97°
71°
3
98°
71°
4
97°
69°
5
96°
69°
6
92°
65°
7
89°
64°
8
91°
65°
9
90°
68°
10
86°
61°
11
85°
55°
12
80°
54°
13
85°
55°
14
79°
54°
15
80°
59°
16
81°
58°
17
82°
58°
18
83°
57°
19
82°
59°
20
83°
58°
21
82°
58°
22
82°
57°
23
81°
57°
24
82°
56°
25
81°
57°
26
82°
55°
27
81°
56°
28
81°
56°
29
80°
55°
30
81°
55°
1
80°
54°
2
80°
55°
3
79°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Courtois
Courtois's September 2026 forecast shows daily high temperatures ranging from 79° to 98°, with overnight lows between 54° and 71°. The average high for September is 85° with an average low of 60°. 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 Courtois. See also: October | November | December.
