S
M
T
W
T
F
S
27
76°
58°
28
77°
57°
29
72°
54°
30
75°
58°
1
74°
56°
2
72°
53°
3
72°
55°
4
74°
56°
5
75°
56°
6
73°
57°
7
73°
56°
8
72°
55°
9
72°
55°
10
73°
56°
11
73°
53°
12
71°
49°
13
61°
45°
14
59°
41°
15
58°
40°
16
58°
40°
17
59°
45°
18
65°
42°
19
57°
40°
20
58°
39°
21
57°
39°
22
57°
40°
23
71°
52°
24
69°
47°
25
72°
43°
26
66°
40°
27
57°
35°
28
54°
31°
29
53°
34°
30
54°
45°
31
58°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Reston
Reston's October 2026 forecast shows daily high temperatures ranging from 53° to 77°, with overnight lows between 31° and 58°. The average high for October is 66° with an average low of 47°. 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 Reston. See also: November | December | January.