S
M
T
W
T
F
S
29
57°
41°
30
54°
39°
31
61°
41°
1
53°
39°
2
57°
35°
3
62°
31°
4
67°
34°
5
76°
41°
6
81°
42°
7
65°
38°
8
70°
36°
9
70°
40°
10
75°
46°
11
63°
41°
12
59°
40°
13
58°
38°
14
52°
41°
15
52°
36°
16
56°
35°
17
62°
35°
18
73°
44°
19
72°
46°
20
66°
46°
21
62°
49°
22
59°
44°
23
60°
41°
24
69°
43°
25
68°
44°
26
67°
45°
27
65°
44°
28
67°
46°
29
66°
44°
30
64°
41°
1
58°
39°
2
58°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Harrisburg
Harrisburg's April 2026 forecast shows daily high temperatures ranging from 58° to 73°, with overnight lows between 35° and 49°. The average high for April is 65° with an average low of 43°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Harrisburg. See also: May | June | July.