S
M
T
W
T
F
S
29
82°
44°
30
74°
48°
31
65°
55°
1
59°
51°
2
63°
40°
3
77°
37°
4
81°
40°
5
85°
45°
6
62°
49°
7
63°
47°
8
74°
47°
9
71°
54°
10
67°
52°
11
61°
48°
12
61°
42°
13
65°
41°
14
68°
45°
15
67°
46°
16
70°
48°
17
67°
46°
18
68°
46°
19
69°
45°
20
70°
45°
21
70°
47°
22
69°
46°
23
64°
43°
24
64°
43°
25
63°
45°
26
63°
42°
27
64°
43°
28
64°
43°
29
65°
42°
30
64°
43°
1
65°
45°
2
66°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Petaluma
Petaluma's April 2026 forecast shows daily high temperatures ranging from 61° to 71°, with overnight lows between 41° and 54°. The average high for April is 66° with an average low of 45°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Petaluma. See also: May | June | July.
