S
M
T
W
T
F
S
27
75°
43°
28
71°
48°
29
78°
43°
30
77°
45°
1
73°
46°
2
77°
46°
3
77°
44°
4
68°
42°
5
74°
42°
6
71°
33°
7
62°
30°
8
61°
33°
9
65°
34°
10
63°
38°
11
70°
41°
12
71°
33°
13
72°
27°
14
63°
32°
15
58°
27°
16
62°
25°
17
57°
29°
18
63°
30°
19
66°
37°
20
68°
37°
21
69°
36°
22
70°
29°
23
65°
29°
24
61°
36°
25
66°
31°
26
68°
21°
27
60°
18°
28
51°
20°
29
49°
30°
30
53°
32°
31
54°
31°
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 49° to 78°, with overnight lows between 18° and 48°. The average high for October is 66° 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 Harrisburg. See also: November | December | January.
