S
M
T
W
T
F
S
29
49°
19°
30
67°
30°
31
60°
39°
1
64°
38°
2
38°
32°
3
56°
32°
4
56°
34°
5
48°
34°
6
44°
26°
7
39°
25°
8
47°
23°
9
58°
26°
10
70°
34°
11
54°
30°
12
56°
40°
13
69°
52°
14
76°
56°
15
79°
51°
16
75°
55°
17
72°
47°
18
69°
49°
19
65°
45°
20
57°
37°
21
58°
40°
22
64°
47°
23
66°
46°
24
61°
37°
25
54°
35°
26
56°
39°
27
55°
38°
28
56°
37°
29
59°
36°
30
60°
35°
1
58°
35°
2
57°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Hillsboro
Hillsboro's April 2026 forecast shows daily high temperatures ranging from 54° to 79°, with overnight lows between 30° and 56°. The average high for April 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 April weather will actually feel in Hillsboro. See also: May | June | July.