S
M
T
W
T
F
S
29
43°
25°
30
55°
42°
31
56°
45°
1
54°
42°
2
42°
38°
3
51°
47°
4
53°
38°
5
57°
41°
6
52°
38°
7
46°
31°
8
42°
34°
9
52°
46°
10
54°
42°
11
59°
44°
12
58°
47°
13
59°
45°
14
56°
44°
15
57°
44°
16
54°
38°
17
47°
34°
18
48°
36°
19
49°
41°
20
52°
44°
21
59°
44°
22
59°
43°
23
51°
43°
24
53°
45°
25
60°
45°
26
56°
44°
27
53°
46°
28
56°
44°
29
54°
45°
30
59°
46°
1
56°
46°
2
55°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Osterville
Osterville's April 2026 forecast shows daily high temperatures ranging from 42° to 60°, with overnight lows between 31° and 47°. The average high for April is 54° 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 Osterville. See also: May | June | July.