S
M
T
W
T
F
S
30
90°
68°
31
88°
63°
1
84°
63°
2
83°
64°
3
84°
67°
4
88°
66°
5
88°
67°
6
87°
66°
7
86°
67°
8
83°
62°
9
82°
60°
10
82°
61°
11
83°
60°
12
81°
59°
13
80°
60°
14
79°
59°
15
80°
60°
16
81°
59°
17
80°
61°
18
82°
63°
19
84°
65°
20
84°
61°
21
84°
56°
22
Hist. Avg.
83°
60°
23
Hist. Avg.
83°
60°
24
Hist. Avg.
82°
59°
25
Hist. Avg.
82°
59°
26
Hist. Avg.
81°
58°
27
Hist. Avg.
81°
58°
28
Hist. Avg.
81°
57°
29
Hist. Avg.
80°
57°
30
Hist. Avg.
80°
57°
1
Hist. Avg.
80°
56°
2
Hist. Avg.
79°
56°
3
Hist. Avg.
79°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Arlington
Arlington's September 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 56° and 68°. 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 Arlington. See also: October | November | December.
