S
M
T
W
T
F
S
27
81°
65°
28
88°
59°
29
94°
55°
30
96°
62°
1
95°
71°
2
77°
67°
3
70°
66°
4
85°
58°
5
83°
52°
6
83°
49°
7
86°
53°
8
88°
56°
9
89°
59°
10
86°
56°
11
81°
58°
12
88°
59°
13
89°
58°
14
80°
57°
15
75°
51°
16
72°
48°
17
74°
47°
18
73°
46°
19
66°
47°
20
65°
51°
21
66°
48°
22
66°
42°
23
68°
48°
24
74°
42°
25
64°
45°
26
75°
48°
27
69°
45°
28
70°
47°
29
73°
50°
30
72°
51°
31
71°
51°
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 64° to 89°, with overnight lows between 42° and 59°. The average high for October is 76° with an average low of 51°. 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.
