S
M
T
W
T
F
S
30
73°
56°
31
76°
52°
1
77°
51°
2
75°
59°
3
65°
60°
4
80°
60°
5
72°
55°
6
71°
53°
7
79°
52°
8
78°
50°
9
66°
47°
10
82°
62°
11
71°
54°
12
74°
47°
13
63°
55°
14
67°
51°
15
70°
43°
16
77°
53°
17
71°
55°
18
75°
51°
19
65°
44°
20
58°
43°
21
67°
44°
22
65°
45°
23
66°
42°
24
69°
46°
25
71°
54°
26
65°
54°
27
60°
51°
28
56°
53°
29
62°
50°
30
68°
49°
1
73°
53°
2
71°
49°
3
70°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Chisholm
Chisholm's September 2026 forecast shows daily high temperatures ranging from 56° to 73°, with overnight lows between 46° and 54°. The average high for September is 67° with an average low of 51°. 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 Chisholm. See also: October | November | December.