S
M
T
W
T
F
S
31
79°
55°
1
79°
56°
2
84°
51°
3
81°
63°
4
76°
64°
5
81°
62°
6
85°
59°
7
82°
63°
8
81°
65°
9
80°
66°
10
83°
63°
11
82°
62°
12
83°
63°
13
80°
60°
14
81°
59°
15
83°
61°
16
78°
55°
17
80°
60°
18
75°
58°
19
73°
58°
20
78°
54°
21
73°
52°
22
72°
55°
23
75°
62°
24
82°
62°
25
83°
59°
26
75°
55°
27
74°
55°
28
75°
60°
29
76°
60°
30
77°
61°
1
76°
60°
2
79°
61°
3
82°
63°
4
83°
64°
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 72° to 85°, with overnight lows between 52° and 66°. The average high for June is 79° with an average low of 60°. 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.