S
M
T
W
T
F
S
27
70°
52°
28
65°
55°
29
58°
53°
30
66°
53°
1
72°
59°
2
68°
54°
3
60°
38°
4
68°
35°
5
57°
44°
6
54°
40°
7
63°
39°
8
65°
50°
9
57°
46°
10
55°
40°
11
64°
43°
12
60°
46°
13
46°
45°
14
56°
46°
15
55°
42°
16
61°
44°
17
46°
29°
18
60°
28°
19
69°
42°
20
60°
33°
21
57°
29°
22
55°
31°
23
51°
29°
24
57°
28°
25
65°
31°
26
54°
35°
27
45°
29°
28
53°
27°
29
69°
50°
30
59°
43°
31
46°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Fairfax
Fairfax's October 2026 forecast shows daily high temperatures ranging from 46° to 46°, with overnight lows between 32° and 32°. The average high for October is 46° with an average low of 32°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Fairfax. See also: November | December | January.