S
M
T
W
T
F
S
27
77°
60°
28
80°
60°
29
80°
52°
30
73°
51°
1
72°
59°
2
73°
58°
3
76°
55°
4
78°
56°
5
78°
59°
6
76°
58°
7
77°
59°
8
78°
56°
9
79°
55°
10
74°
51°
11
75°
55°
12
67°
56°
13
68°
55°
14
71°
54°
15
67°
53°
16
73°
53°
17
74°
46°
18
75°
43°
19
64°
46°
20
64°
42°
21
63°
51°
22
63°
51°
23
70°
48°
24
70°
42°
25
62°
40°
26
61°
41°
27
62°
48°
28
66°
43°
29
67°
39°
30
63°
38°
31
59°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Mt. Vernon Square
Mt. Vernon Square's October 2026 forecast shows daily high temperatures ranging from 59° to 80°, with overnight lows between 38° and 60°. The average high for October is 71° 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 Mt. Vernon Square. See also: November | December | January.