S
M
T
W
T
F
S
29
49°
24°
30
65°
43°
31
68°
50°
1
75°
50°
2
50°
40°
3
57°
40°
4
68°
41°
5
56°
41°
6
55°
40°
7
56°
33°
8
46°
29°
9
47°
29°
10
53°
37°
11
62°
46°
12
52°
38°
13
71°
47°
14
80°
55°
15
80°
60°
16
82°
57°
17
80°
54°
18
61°
47°
19
51°
40°
20
52°
34°
21
51°
42°
22
56°
45°
23
68°
47°
24
62°
46°
25
54°
46°
26
55°
45°
27
60°
47°
28
58°
48°
29
59°
44°
30
61°
47°
1
63°
49°
2
63°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Oyster Bay
Oyster Bay's April 2026 forecast shows daily high temperatures ranging from 51° to 68°, with overnight lows between 34° and 49°. The average high for April is 59° with an average low of 45°. 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 Oyster Bay. See also: May | June | July.