S
M
T
W
T
F
S
29
47°
21°
30
57°
44°
31
63°
48°
1
65°
41°
2
45°
40°
3
56°
49°
4
66°
45°
5
58°
40°
6
50°
38°
7
51°
31°
8
45°
33°
9
56°
45°
10
61°
44°
11
57°
45°
12
59°
43°
13
55°
44°
14
60°
41°
15
57°
44°
16
58°
35°
17
51°
35°
18
52°
36°
19
53°
38°
20
59°
45°
21
63°
46°
22
65°
45°
23
55°
45°
24
56°
47°
25
66°
47°
26
63°
46°
27
56°
45°
28
57°
41°
29
57°
44°
30
63°
48°
1
62°
45°
2
59°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Mastic
Mastic's April 2026 forecast shows daily high temperatures ranging from 45° to 66°, with overnight lows between 31° and 49°. The average high for April is 57° 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 Mastic. See also: May | June | July.