S
M
T
W
T
F
S
27
73°
49°
28
75°
43°
29
66°
39°
30
65°
40°
1
65°
42°
2
73°
43°
3
74°
46°
4
74°
47°
5
73°
48°
6
74°
48°
7
73°
46°
8
74°
37°
9
71°
42°
10
65°
38°
11
61°
44°
12
62°
45°
13
63°
47°
14
69°
47°
15
71°
46°
16
70°
41°
17
68°
34°
18
67°
33°
19
56°
32°
20
57°
31°
21
54°
41°
22
57°
40°
23
65°
34°
24
61°
30°
25
52°
28°
26
51°
37°
27
54°
38°
28
58°
29°
29
59°
26°
30
52°
28°
31
50°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Mount Vernon
Mount Vernon's October 2026 forecast shows daily high temperatures ranging from 50° to 75°, with overnight lows between 26° and 49°. The average high for October is 64° with an average low of 39°. 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 Mount Vernon. See also: November | December | January.
