S
M
T
W
T
F
S
29
57°
22°
30
70°
44°
31
80°
62°
1
80°
56°
2
56°
41°
3
71°
41°
4
79°
45°
5
61°
44°
6
56°
39°
7
53°
32°
8
52°
26°
9
60°
25°
10
70°
41°
11
65°
42°
12
66°
34°
13
79°
50°
14
86°
56°
15
88°
56°
16
90°
59°
17
82°
59°
18
75°
51°
19
53°
33°
20
53°
30°
21
57°
24°
22
63°
44°
23
78°
40°
24
78°
44°
25
51°
42°
26
59°
38°
27
68°
43°
28
68°
47°
29
61°
51°
30
61°
42°
1
57°
41°
2
54°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Horsham
Horsham's April 2026 forecast shows daily high temperatures ranging from 54° to 68°, with overnight lows between 38° and 51°. The average high for April is 61° 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 Horsham. See also: May | June | July.