S
M
T
W
T
F
S
27
62°
58°
28
62°
56°
29
68°
55°
30
73°
58°
1
77°
60°
2
84°
61°
3
71°
53°
4
60°
53°
5
68°
50°
6
61°
43°
7
64°
39°
8
73°
50°
9
69°
46°
10
67°
46°
11
58°
51°
12
70°
52°
13
70°
53°
14
76°
59°
15
63°
50°
16
74°
50°
17
55°
39°
18
56°
45°
19
61°
50°
20
67°
50°
21
64°
44°
22
62°
45°
23
63°
46°
24
62°
44°
25
62°
43°
26
61°
45°
27
62°
46°
28
60°
45°
29
61°
41°
30
60°
41°
31
56°
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 55° to 74°, with overnight lows between 39° and 50°. The average high for October is 62° 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.