S
M
T
W
T
F
S
30
85°
60°
31
79°
58°
1
77°
64°
2
77°
63°
3
81°
59°
4
82°
65°
5
84°
65°
6
84°
58°
7
82°
58°
8
76°
57°
9
75°
57°
10
77°
60°
11
81°
57°
12
79°
57°
13
74°
56°
14
73°
62°
15
78°
61°
16
80°
54°
17
80°
53°
18
71°
52°
19
71°
53°
20
72°
59°
21
70°
58°
22
71°
52°
23
69°
55°
24
69°
54°
25
71°
58°
26
73°
58°
27
76°
52°
28
75°
50°
29
68°
56°
30
69°
56°
1
68°
57°
2
71°
54°
3
72°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Annandale
Annandale's September 2026 forecast shows daily high temperatures ranging from 68° to 85°, with overnight lows between 48° and 65°. The average high for September is 75° with an average low of 57°. 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 Annandale. See also: October | November | December.
