S
M
T
W
T
F
S
28
80°
70°
29
95°
74°
30
91°
69°
1
89°
67°
2
89°
69°
3
88°
68°
4
86°
67°
5
84°
64°
6
82°
65°
7
86°
63°
8
85°
65°
9
85°
62°
10
81°
59°
11
81°
63°
12
83°
63°
13
77°
55°
14
77°
55°
15
78°
59°
16
82°
60°
17
84°
63°
18
84°
61°
19
81°
60°
20
84°
63°
21
85°
64°
22
86°
65°
23
87°
65°
24
87°
66°
25
86°
66°
26
87°
65°
27
87°
64°
28
86°
63°
29
85°
63°
30
84°
61°
31
82°
61°
1
81°
62°
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 77° to 95°, with overnight lows between 55° and 74°. The average high for July is 84° with an average low of 64°. 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.