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
79°
52°
7
68°
54°
8
79°
54°
9
86°
55°
10
82°
54°
11
90°
59°
12
88°
59°
13
93°
62°
14
93°
60°
15
91°
59°
16
91°
59°
17
90°
60°
18
88°
60°
19
88°
59°
20
87°
60°
21
88°
58°
22
91°
62°
23
90°
61°
24
83°
57°
25
84°
57°
26
86°
58°
27
87°
59°
28
89°
61°
29
89°
61°
30
88°
60°
31
89°
61°
1
86°
59°
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 79° to 93°, with overnight lows between 54° 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.