S
M
T
W
T
F
S
27
68°
49°
28
68°
50°
29
67°
49°
30
69°
48°
1
70°
49°
2
68°
41°
3
68°
40°
4
61°
37°
5
56°
44°
6
59°
34°
7
59°
32°
8
52°
40°
9
56°
43°
10
62°
44°
11
63°
45°
12
64°
42°
13
63°
39°
14
61°
37°
15
53°
33°
16
54°
40°
17
58°
32°
18
58°
31°
19
52°
40°
20
55°
38°
21
59°
39°
22
57°
41°
23
60°
42°
24
61°
41°
25
61°
40°
26
58°
37°
27
60°
34°
28
58°
29°
29
47°
28°
30
48°
37°
31
49°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Harrison
Harrison's October 2026 forecast shows daily high temperatures ranging from 47° to 70°, with overnight lows between 28° and 50°. The average high for October is 59° with an average low of 39°. 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 Harrison. See also: November | December | January.