S
M
T
W
T
F
S
27
73°
36°
28
74°
39°
29
74°
40°
30
65°
59°
1
65°
55°
2
62°
38°
3
62°
31°
4
64°
46°
5
58°
33°
6
66°
30°
7
71°
43°
8
62°
44°
9
65°
44°
10
74°
47°
11
73°
47°
12
81°
61°
13
71°
53°
14
62°
42°
15
56°
44°
16
55°
28°
17
54°
29°
18
59°
38°
19
62°
37°
20
66°
40°
21
62°
44°
22
60°
42°
23
57°
38°
24
55°
39°
25
53°
32°
26
53°
34°
27
54°
28°
28
45°
27°
29
46°
36°
30
51°
35°
31
55°
30°
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 45° to 81°, with overnight lows between 27° and 61°. The average high for October is 58° with an average low of 38°. 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.