S
M
T
W
T
F
S
27
83°
62°
28
84°
61°
29
83°
61°
30
82°
57°
1
81°
49°
2
73°
49°
3
72°
54°
4
72°
57°
5
69°
57°
6
80°
52°
7
75°
53°
8
69°
58°
9
75°
58°
10
78°
48°
11
76°
45°
12
71°
46°
13
75°
48°
14
74°
48°
15
73°
47°
16
74°
48°
17
74°
52°
18
75°
52°
19
75°
53°
20
76°
54°
21
77°
55°
22
76°
53°
23
74°
54°
24
76°
50°
25
76°
44°
26
71°
39°
27
63°
42°
28
62°
48°
29
63°
42°
30
70°
36°
31
60°
35°
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 60° to 84°, with overnight lows between 35° and 62°. The average high for October is 74° with an average low of 50°. 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.