S
M
T
W
T
F
S
29
66°
25°
30
70°
53°
31
79°
60°
1
77°
58°
2
84°
54°
3
76°
61°
4
84°
55°
5
71°
43°
6
55°
34°
7
49°
31°
8
65°
38°
9
76°
46°
10
77°
49°
11
66°
40°
12
78°
60°
13
77°
62°
14
80°
62°
15
72°
51°
16
74°
52°
17
72°
51°
18
71°
55°
19
75°
55°
20
76°
57°
21
77°
43°
22
70°
40°
23
61°
44°
24
72°
51°
25
71°
50°
26
69°
44°
27
61°
43°
28
63°
43°
29
67°
47°
30
71°
51°
1
67°
53°
2
73°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Smithtown
Smithtown's April 2026 forecast shows daily high temperatures ranging from 61° to 80°, with overnight lows between 38° and 62°. The average high for April is 71° with an average low of 50°. 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 Smithtown. See also: May | June | July.
