S
M
T
W
T
F
S
29
82°
46°
30
84°
63°
31
84°
64°
1
81°
63°
2
85°
62°
3
78°
63°
4
65°
48°
5
70°
42°
6
72°
42°
7
70°
42°
8
76°
45°
9
79°
55°
10
82°
60°
11
79°
60°
12
81°
65°
13
87°
68°
14
80°
63°
15
82°
63°
16
87°
66°
17
78°
47°
18
66°
41°
19
68°
46°
20
68°
50°
21
70°
58°
22
74°
61°
23
79°
60°
24
77°
53°
25
72°
47°
26
70°
48°
27
71°
48°
28
76°
52°
29
79°
57°
30
80°
56°
1
80°
54°
2
78°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Foster
Foster's April 2026 forecast shows daily high temperatures ranging from 66° to 87°, with overnight lows between 41° and 66°. The average high for April is 75° with an average low of 53°. 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 Foster. See also: May | June | July.