S
M
T
W
T
F
S
27
63°
58°
28
64°
58°
29
72°
59°
30
81°
59°
1
83°
64°
2
87°
65°
3
73°
57°
4
64°
55°
5
71°
52°
6
63°
45°
7
71°
42°
8
N/A
9
72°
51°
10
68°
54°
11
65°
57°
12
71°
57°
13
71°
46°
14
64°
43°
15
60°
46°
16
68°
50°
17
65°
43°
18
59°
42°
19
61°
43°
20
63°
45°
21
62°
42°
22
56°
46°
23
56°
37°
24
55°
36°
25
55°
39°
26
62°
43°
27
64°
35°
28
53°
34°
29
52°
34°
30
53°
36°
31
59°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Harrington Park
Harrington Park's October 2026 forecast shows daily high temperatures ranging from 52° to 72°, with overnight lows between 34° and 57°. The average high for October is 61° with an average low of 43°. 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 Harrington Park. See also: November | December | January.