S
M
T
W
T
F
S
28
86°
59°
29
84°
57°
30
81°
56°
1
83°
59°
2
86°
61°
3
88°
62°
4
89°
62°
5
88°
61°
6
86°
60°
7
85°
59°
8
87°
62°
9
89°
63°
10
90°
63°
11
90°
62°
12
89°
63°
13
90°
63°
14
90°
62°
15
86°
60°
16
85°
59°
17
86°
60°
18
88°
63°
19
90°
62°
20
90°
62°
21
90°
62°
22
90°
63°
23
91°
62°
24
93°
64°
25
94°
63°
26
93°
63°
27
93°
62°
28
92°
62°
29
92°
61°
30
91°
61°
31
91°
59°
1
89°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Santa Rosa Valley
Santa Rosa Valley's July 2026 forecast shows daily high temperatures ranging from 81° to 94°, with overnight lows between 56° and 64°. The average high for July is 89° with an average low of 61°. 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 Santa Rosa Valley. See also: August | September | October.