S
M
T
W
T
F
S
31
79°
55°
1
79°
56°
2
84°
51°
3
84°
52°
4
80°
66°
5
82°
60°
6
85°
61°
7
86°
59°
8
73°
61°
9
82°
65°
10
80°
64°
11
71°
55°
12
79°
55°
13
76°
57°
14
70°
50°
15
78°
48°
16
70°
53°
17
60°
50°
18
71°
46°
19
71°
50°
20
75°
52°
21
67°
46°
22
74°
51°
23
74°
54°
24
75°
55°
25
76°
58°
26
78°
58°
27
79°
63°
28
78°
60°
29
77°
59°
30
80°
58°
1
75°
57°
2
75°
56°
3
74°
54°
4
75°
58°
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 60° to 80°, with overnight lows between 46° and 63°. The average high for June is 74° with an average low of 55°. 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.