S
M
T
W
T
F
S
31
72°
41°
1
81°
51°
2
87°
53°
3
71°
51°
4
74°
45°
5
71°
50°
6
65°
45°
7
68°
47°
8
72°
50°
9
76°
52°
10
79°
51°
11
74°
49°
12
77°
53°
13
80°
54°
14
72°
48°
15
65°
46°
16
68°
48°
17
78°
52°
18
70°
52°
19
68°
44°
20
72°
47°
21
77°
53°
22
79°
53°
23
77°
48°
24
69°
45°
25
71°
47°
26
75°
46°
27
71°
46°
28
70°
45°
29
72°
46°
30
79°
49°
1
76°
47°
2
79°
52°
3
82°
54°
4
81°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Foster
Foster's June 2026 forecast shows daily high temperatures ranging from 65° to 87°, with overnight lows between 44° and 54°. The average high for June is 74° with an average low of 49°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Foster. See also: July | August | September.