S
M
T
W
T
F
S
29
29°
21°
30
27°
4°
31
29°
0°
1
39°
17°
2
33°
28°
3
45°
29°
4
53°
32°
5
36°
22°
6
38°
18°
7
56°
24°
8
30°
22°
9
44°
22°
10
56°
22°
11
67°
29°
12
51°
33°
13
54°
33°
14
64°
32°
15
48°
19°
16
21°
14°
17
25°
11°
18
39°
11°
19
56°
20°
20
66°
40°
21
74°
38°
22
72°
35°
23
37°
21°
24
26°
18°
25
28°
18°
26
33°
21°
27
37°
16°
28
37°
22°
29
42°
27°
30
46°
26°
1
53°
30°
2
56°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Gilroy
Gilroy's April 2026 forecast shows daily high temperatures ranging from 26° to 56°, with overnight lows between 16° and 30°. The average high for April is 40° with an average low of 23°. 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 Gilroy. See also: May | June | July.