S
M
T
W
T
F
S
30
89°
72°
31
91°
72°
1
91°
71°
2
89°
71°
3
88°
70°
4
88°
71°
5
87°
71°
6
87°
70°
7
90°
71°
8
92°
71°
9
89°
70°
10
90°
69°
11
91°
69°
12
90°
68°
13
89°
69°
14
90°
67°
15
89°
68°
16
85°
67°
17
87°
68°
18
Hist. Avg.
88°
66°
19
Hist. Avg.
88°
66°
20
Hist. Avg.
87°
66°
21
Hist. Avg.
87°
66°
22
Hist. Avg.
87°
65°
23
Hist. Avg.
87°
65°
24
Hist. Avg.
86°
65°
25
Hist. Avg.
86°
64°
26
Hist. Avg.
86°
64°
27
Hist. Avg.
86°
64°
28
Hist. Avg.
85°
63°
29
Hist. Avg.
85°
63°
30
Hist. Avg.
85°
62°
1
Hist. Avg.
84°
62°
2
Hist. Avg.
84°
61°
3
Hist. Avg.
84°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Arnold Line
Arnold Line's September 2026 forecast shows daily high temperatures ranging from 85° to 92°, with overnight lows between 67° and 72°. 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 Arnold Line. See also: October | November | December.
