S
M
T
W
T
F
S
27
62°
40°
28
62°
39°
29
63°
41°
30
62°
43°
1
61°
45°
2
60°
43°
3
59°
42°
4
60°
40°
5
59°
39°
6
59°
40°
7
60°
39°
8
65°
40°
9
61°
39°
10
60°
41°
11
62°
40°
12
60°
38°
13
58°
41°
14
56°
41°
15
56°
40°
16
57°
40°
17
56°
41°
18
56°
41°
19
55°
42°
20
55°
41°
21
53°
38°
22
52°
38°
23
52°
39°
24
51°
37°
25
50°
38°
26
49°
38°
27
49°
36°
28
50°
36°
29
49°
38°
30
48°
39°
31
49°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Index
Index's October 2026 forecast shows daily high temperatures ranging from 48° to 65°, with overnight lows between 36° and 45°. The average high for October is 56° with an average low of 40°. 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 Index. See also: November | December | January.