S
M
T
W
T
F
S
28
84°
49°
29
88°
54°
30
80°
57°
1
73°
54°
2
78°
51°
3
89°
53°
4
82°
54°
5
80°
55°
6
78°
54°
7
73°
53°
8
80°
55°
9
88°
54°
10
82°
57°
11
92°
59°
12
88°
60°
13
89°
62°
14
93°
60°
15
95°
60°
16
93°
59°
17
94°
60°
18
93°
60°
19
86°
59°
20
89°
60°
21
90°
62°
22
91°
62°
23
90°
61°
24
90°
61°
25
89°
60°
26
90°
61°
27
88°
60°
28
86°
59°
29
89°
60°
30
89°
61°
31
88°
61°
1
88°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Walnut Creek
Walnut Creek's July 2026 forecast shows daily high temperatures ranging from 73° to 95°, with overnight lows between 53° and 62°. The average high for July is 88° with an average low of 59°. 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 Walnut Creek. See also: August | September | October.