S
M
T
W
T
F
S
30
80°
59°
31
81°
63°
1
85°
63°
2
85°
62°
3
84°
61°
4
84°
54°
5
78°
55°
6
78°
57°
7
81°
60°
8
81°
61°
9
83°
59°
10
77°
60°
11
83°
59°
12
83°
61°
13
82°
60°
14
82°
60°
15
83°
59°
16
82°
59°
17
82°
58°
18
81°
53°
19
80°
52°
20
77°
49°
21
72°
49°
22
72°
54°
23
75°
53°
24
78°
48°
25
72°
47°
26
72°
49°
27
71°
48°
28
75°
52°
29
76°
53°
30
77°
54°
1
75°
53°
2
75°
52°
3
70°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in West Fairfax District
West Fairfax District's September 2026 forecast shows daily high temperatures ranging from 70° to 85°, with overnight lows between 47° and 63°. The average high for September is 79° with an average low of 56°. 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 West Fairfax District. See also: October | November | December.
