S
M
T
W
T
F
S
29
48°
22°
30
65°
41°
31
74°
41°
1
77°
41°
2
41°
36°
3
68°
36°
4
61°
37°
5
57°
38°
6
49°
29°
7
53°
28°
8
51°
26°
9
52°
23°
10
69°
31°
11
60°
42°
12
56°
33°
13
71°
43°
14
84°
58°
15
N/A
16
86°
59°
17
78°
51°
18
65°
49°
19
59°
33°
20
48°
29°
21
50°
37°
22
59°
36°
23
55°
37°
24
54°
38°
25
58°
41°
26
59°
42°
27
57°
41°
28
55°
42°
29
55°
43°
30
57°
42°
1
58°
45°
2
58°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
April Weather in Foster
Foster's April 2026 forecast shows daily high temperatures ranging from 48° to 86°, with overnight lows between 29° and 59°. The average high for April is 59° 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 Foster. See also: May | June | July.