S
M
T
W
T
F
S
28
65°
51°
29
70°
48°
30
72°
46°
1
74°
47°
2
75°
48°
3
80°
51°
4
84°
53°
5
83°
52°
6
79°
50°
7
75°
53°
8
74°
52°
9
74°
47°
10
75°
47°
11
76°
51°
12
83°
54°
13
77°
49°
14
78°
51°
15
76°
47°
16
76°
48°
17
77°
50°
18
81°
52°
19
79°
51°
20
82°
51°
21
83°
52°
22
80°
54°
23
79°
53°
24
80°
52°
25
82°
55°
26
80°
55°
27
79°
54°
28
79°
51°
29
78°
51°
30
77°
48°
31
78°
51°
1
83°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Foster
Foster's July 2026 forecast shows daily high temperatures ranging from 65° to 84°, with overnight lows between 46° and 55°. The average high for July is 78° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Foster. See also: August | September | October.