S
M
T
W
T
F
S
27
79°
50°
28
75°
58°
29
77°
52°
30
76°
46°
1
68°
46°
2
86°
44°
3
79°
42°
4
83°
43°
5
91°
46°
6
89°
46°
7
82°
45°
8
83°
49°
9
88°
58°
10
87°
54°
11
74°
47°
12
74°
44°
13
65°
47°
14
64°
41°
15
53°
31°
16
55°
33°
17
62°
39°
18
63°
42°
19
62°
39°
20
62°
41°
21
46°
18°
22
67°
35°
23
64°
35°
24
66°
36°
25
66°
35°
26
61°
34°
27
61°
34°
28
63°
35°
29
63°
34°
30
55°
34°
31
61°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Harrisburg
Harrisburg's October 2026 forecast shows daily high temperatures ranging from 46° to 88°, with overnight lows between 18° and 58°. The average high for October is 65° with an average low of 39°. 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 Harrisburg. See also: November | December | January.
