S
M
T
W
T
F
S
30
104°
76°
31
103°
75°
1
101°
70°
2
104°
75°
3
104°
78°
4
104°
74°
5
103°
76°
6
99°
73°
7
99°
74°
8
100°
74°
9
100°
68°
10
90°
68°
11
99°
72°
12
96°
68°
13
88°
64°
14
84°
63°
15
82°
61°
16
92°
64°
17
89°
64°
18
87°
61°
19
81°
56°
20
75°
62°
21
85°
63°
22
85°
62°
23
82°
62°
24
74°
61°
25
76°
61°
26
78°
60°
27
80°
60°
28
76°
59°
29
72°
57°
30
80°
48°
1
68°
46°
2
69°
46°
3
68°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Arnett
Arnett's September 2026 forecast shows daily high temperatures ranging from 68° to 100°, with overnight lows between 46° and 74°. The average high for September is 84° with an average low of 62°. 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 Arnett. See also: October | November | December.
