S
M
T
W
T
F
S
28
79°
48°
29
83°
49°
30
76°
47°
1
78°
46°
2
71°
50°
3
77°
52°
4
77°
52°
5
74°
52°
6
72°
54°
7
67°
53°
8
75°
52°
9
78°
53°
10
82°
49°
11
78°
50°
12
84°
54°
13
96°
56°
14
95°
55°
15
85°
55°
16
78°
51°
17
80°
47°
18
76°
55°
19
77°
52°
20
79°
56°
21
97°
57°
22
78°
62°
23
76°
57°
24
77°
51°
25
77°
52°
26
76°
52°
27
79°
51°
28
85°
52°
29
87°
52°
30
84°
51°
31
89°
49°
1
92°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Petaluma
Petaluma's July 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for July is ° with an average low of °. 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 Petaluma. See also: August | September | October.
