S
M
T
W
T
F
S
28
85°
62°
29
79°
60°
30
75°
66°
1
76°
48°
2
73°
44°
3
74°
45°
4
81°
45°
5
82°
46°
6
84°
53°
7
84°
61°
8
73°
56°
9
65°
46°
10
67°
38°
11
73°
43°
12
67°
57°
13
64°
56°
14
67°
55°
15
73°
54°
16
65°
39°
17
66°
34°
18
76°
44°
19
78°
50°
20
68°
42°
21
74°
35°
22
68°
45°
23
63°
37°
24
60°
33°
25
60°
30°
26
62°
35°
27
62°
35°
28
58°
39°
29
58°
47°
30
66°
48°
31
61°
48°
1
64°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Herndon
Herndon's October 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for October is ° with an average low of °. 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 Herndon. See also: November | December | January.
