S
M
T
W
T
F
S
29
71°
27°
30
65°
33°
31
54°
37°
1
49°
33°
2
47°
24°
3
60°
17°
4
69°
22°
5
73°
25°
6
72°
29°
7
69°
37°
8
67°
43°
9
66°
40°
10
59°
45°
11
56°
35°
12
54°
35°
13
60°
34°
14
61°
36°
15
60°
38°
16
64°
39°
17
62°
39°
18
62°
37°
19
60°
35°
20
63°
33°
21
56°
29°
22
61°
34°
23
57°
34°
24
57°
37°
25
58°
32°
26
60°
35°
27
67°
38°
28
69°
40°
29
68°
39°
30
69°
40°
1
70°
41°
2
67°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Harper
Harper's April 2026 forecast shows daily high temperatures ranging from 54° to 70°, with overnight lows between 29° and 45°. The average high for April is 62° with an average low of 37°. 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 Harper. See also: May | June | July.