S
M
T
W
T
F
S
31
70°
37°
1
63°
41°
2
75°
43°
3
84°
48°
4
86°
51°
5
91°
56°
6
86°
64°
7
84°
55°
8
75°
48°
9
80°
51°
10
81°
58°
11
81°
60°
12
82°
62°
13
85°
60°
14
77°
59°
15
75°
60°
16
74°
60°
17
77°
61°
18
76°
56°
19
78°
60°
20
76°
58°
21
78°
56°
22
73°
54°
23
73°
54°
24
74°
61°
25
74°
62°
26
80°
59°
27
77°
56°
28
74°
57°
29
75°
56°
30
74°
56°
1
76°
58°
2
75°
57°
3
81°
63°
4
82°
62°
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 73° to 91°, with overnight lows between 48° and 64°. The average high for June is 78° with an average low of 58°. 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.