S
M
T
W
T
F
S
27
73°
48°
28
73°
51°
29
77°
50°
30
78°
55°
1
87°
61°
2
69°
47°
3
69°
47°
4
72°
47°
5
66°
42°
6
68°
45°
7
75°
50°
8
79°
51°
9
77°
53°
10
77°
50°
11
72°
50°
12
69°
47°
13
68°
46°
14
68°
48°
15
67°
45°
16
72°
50°
17
71°
49°
18
71°
50°
19
70°
44°
20
60°
40°
21
58°
39°
22
58°
38°
23
62°
46°
24
69°
47°
25
69°
48°
26
68°
38°
27
56°
35°
28
58°
36°
29
61°
42°
30
58°
37°
31
64°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Westerville
Westerville's October 2026 forecast shows daily high temperatures ranging from 56° to 79°, with overnight lows between 35° and 53°. The average high for October is 67° with an average low of 45°. 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 Westerville. See also: November | December | January.