S
M
T
W
T
F
S
27
75°
43°
28
77°
46°
29
79°
46°
30
82°
52°
1
88°
55°
2
73°
55°
3
70°
46°
4
76°
45°
5
71°
41°
6
70°
44°
7
81°
49°
8
76°
45°
9
77°
50°
10
78°
57°
11
73°
58°
12
77°
57°
13
74°
53°
14
70°
49°
15
71°
47°
16
65°
46°
17
62°
43°
18
71°
48°
19
61°
42°
20
65°
47°
21
59°
46°
22
59°
40°
23
61°
43°
24
61°
38°
25
56°
36°
26
56°
36°
27
57°
34°
28
56°
37°
29
62°
45°
30
66°
46°
31
65°
46°
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 56° to 81°, with overnight lows between 34° and 58°. 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 Harrison. See also: November | December | January.