S
M
T
W
T
F
S
31
78°
45°
1
86°
50°
2
79°
50°
3
87°
49°
4
84°
50°
5
84°
50°
6
77°
48°
7
82°
52°
8
84°
51°
9
86°
53°
10
85°
52°
11
83°
52°
12
81°
53°
13
82°
52°
14
78°
50°
15
77°
54°
16
81°
54°
17
81°
53°
18
78°
53°
19
79°
51°
20
77°
51°
21
79°
52°
22
78°
51°
23
77°
53°
24
80°
52°
25
79°
51°
26
76°
52°
27
76°
51°
28
80°
52°
29
82°
52°
30
80°
53°
1
79°
54°
2
77°
54°
3
80°
55°
4
78°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Petaluma
Petaluma's June 2026 forecast shows daily high temperatures ranging from 76° to 87°, with overnight lows between 48° and 55°. The average high for June is 80° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Petaluma. See also: July | August | September.