S
M
T
W
T
F
S
27
78°
49°
28
82°
42°
29
84°
46°
30
92°
57°
1
92°
69°
2
79°
61°
3
77°
55°
4
80°
51°
5
78°
49°
6
79°
45°
7
84°
43°
8
85°
50°
9
88°
47°
10
69°
56°
11
81°
57°
12
90°
54°
13
91°
60°
14
79°
71°
15
83°
71°
16
74°
52°
17
60°
37°
18
68°
36°
19
72°
36°
20
74°
42°
21
76°
40°
22
77°
42°
23
74°
40°
24
76°
38°
25
78°
42°
26
76°
43°
27
76°
43°
28
78°
44°
29
80°
47°
30
79°
56°
31
71°
57°
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 71° to 79°, with overnight lows between 56° and 57°. The average high for October is 75° with an average low of 57°. 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.
