S
M
T
W
T
F
S
30
88°
61°
31
91°
67°
1
93°
71°
2
94°
69°
3
94°
70°
4
96°
72°
5
92°
70°
6
81°
64°
7
83°
59°
8
88°
62°
9
91°
72°
10
81°
67°
11
83°
60°
12
84°
68°
13
87°
61°
14
78°
53°
15
93°
61°
16
93°
70°
17
92°
68°
18
82°
69°
19
87°
68°
20
90°
66°
21
66°
56°
22
64°
56°
23
65°
59°
24
67°
52°
25
75°
46°
26
76°
46°
27
77°
43°
28
78°
46°
29
80°
45°
30
84°
54°
1
88°
65°
2
74°
51°
3
72°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Arlington
Arlington's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Arlington. See also: October | November | December.
