S
M
T
W
T
F
S
27
73°
46°
28
74°
50°
29
78°
45°
30
81°
52°
1
88°
59°
2
73°
52°
3
68°
46°
4
74°
45°
5
67°
42°
6
68°
37°
7
79°
41°
8
75°
42°
9
77°
51°
10
75°
58°
11
69°
58°
12
75°
59°
13
68°
47°
14
59°
47°
15
64°
49°
16
67°
45°
17
58°
41°
18
60°
41°
19
62°
42°
20
62°
41°
21
61°
40°
22
57°
38°
23
55°
33°
24
55°
35°
25
59°
39°
26
63°
40°
27
61°
33°
28
52°
31°
29
52°
31°
30
53°
35°
31
61°
37°
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 52° to 77°, with overnight lows between 31° and 59°. The average high for October is 63° with an average low of 42°. 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.
