S
M
T
W
T
F
S
27
N/A
28
89°
56°
29
90°
60°
30
92°
68°
1
92°
68°
2
91°
73°
3
85°
72°
4
76°
72°
5
75°
66°
6
78°
62°
7
81°
58°
8
83°
61°
9
81°
66°
10
72°
65°
11
75°
63°
12
78°
63°
13
80°
64°
14
81°
58°
15
80°
57°
16
77°
56°
17
78°
54°
18
77°
52°
19
77°
56°
20
74°
55°
21
79°
57°
22
80°
56°
23
77°
55°
24
79°
52°
25
75°
46°
26
71°
52°
27
78°
47°
28
70°
45°
29
71°
48°
30
76°
54°
31
78°
54°
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 70° to 83°, with overnight lows between 45° and 66°. The average high for October is 77° with an average low of 56°. 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.
