S
M
T
W
T
F
S
30
69°
63°
31
81°
64°
1
83°
64°
2
83°
61°
3
78°
54°
4
74°
55°
5
80°
54°
6
80°
48°
7
79°
51°
8
72°
57°
9
84°
61°
10
70°
46°
11
76°
64°
12
72°
52°
13
62°
44°
14
64°
58°
15
72°
50°
16
68°
48°
17
67°
49°
18
66°
48°
19
65°
47°
20
66°
48°
21
67°
50°
22
68°
51°
23
69°
51°
24
65°
45°
25
63°
51°
26
68°
50°
27
68°
50°
28
67°
49°
29
66°
51°
30
67°
49°
1
63°
48°
2
60°
48°
3
64°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Curtis
Curtis's September 2026 forecast shows daily high temperatures ranging from 60° to 76°, with overnight lows between 44° and 64°. The average high for September is 67° with an average low of 50°. 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.