S
M
T
W
T
F
S
30
88°
71°
31
88°
71°
1
87°
70°
2
89°
69°
3
89°
69°
4
90°
70°
5
90°
71°
6
89°
71°
7
87°
70°
8
88°
71°
9
91°
69°
10
90°
68°
11
91°
70°
12
90°
69°
13
89°
68°
14
87°
67°
15
88°
68°
16
89°
70°
17
Hist. Avg.
88°
69°
18
Hist. Avg.
88°
68°
19
Hist. Avg.
88°
68°
20
Hist. Avg.
88°
68°
21
Hist. Avg.
88°
68°
22
Hist. Avg.
88°
68°
23
Hist. Avg.
88°
67°
24
Hist. Avg.
87°
67°
25
Hist. Avg.
87°
67°
26
Hist. Avg.
87°
66°
27
Hist. Avg.
87°
66°
28
Hist. Avg.
87°
66°
29
Hist. Avg.
86°
66°
30
Hist. Avg.
86°
65°
1
Hist. Avg.
86°
65°
2
Hist. Avg.
86°
64°
3
Hist. Avg.
86°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Curtis
Curtis's September 2026 forecast shows daily high temperatures ranging from 87° to 91°, with overnight lows between 67° and 71°. The average high for September is 89° with an average low of 70°. 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 Curtis. See also: October | November | December.