S
M
T
W
T
F
S
27
57°
31°
28
68°
35°
29
73°
34°
30
75°
45°
1
70°
41°
2
77°
40°
3
74°
39°
4
80°
36°
5
84°
38°
6
78°
38°
7
76°
35°
8
75°
32°
9
85°
38°
10
60°
36°
11
36°
31°
12
34°
24°
13
37°
21°
14
48°
24°
15
51°
27°
16
59°
24°
17
72°
27°
18
63°
33°
19
72°
28°
20
64°
31°
21
69°
30°
22
72°
37°
23
53°
32°
24
36°
24°
25
33°
21°
26
38°
31°
27
51°
32°
28
53°
28°
29
55°
24°
30
40°
33°
31
49°
34°
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 40° to 49°, with overnight lows between 33° and 34°. The average high for October is 45° with an average low of 34°. 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.