S
M
T
W
T
F
S
27
73°
52°
28
75°
52°
29
77°
48°
30
77°
53°
1
85°
62°
2
74°
50°
3
69°
44°
4
72°
45°
5
65°
39°
6
64°
41°
7
72°
45°
8
73°
46°
9
72°
43°
10
71°
50°
11
74°
52°
12
70°
52°
13
66°
44°
14
65°
44°
15
65°
42°
16
66°
38°
17
67°
43°
18
66°
43°
19
56°
36°
20
59°
35°
21
56°
42°
22
55°
35°
23
55°
38°
24
54°
35°
25
52°
34°
26
52°
35°
27
51°
30°
28
51°
30°
29
56°
39°
30
62°
40°
31
62°
40°
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 51° to 74°, with overnight lows between 30° and 52°. The average high for October is 63° with an average low of 41°. 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.
