S
M
T
W
T
F
S
29
68°
46°
30
68°
47°
31
68°
43°
1
70°
43°
2
70°
42°
3
66°
45°
4
66°
46°
5
62°
47°
6
68°
47°
7
68°
47°
8
63°
49°
9
61°
47°
10
63°
46°
11
66°
45°
12
66°
45°
13
68°
47°
14
72°
46°
15
70°
46°
16
64°
48°
17
63°
45°
18
66°
43°
19
66°
43°
20
66°
43°
21
64°
43°
22
66°
42°
23
66°
43°
24
68°
43°
25
68°
36°
26
64°
46°
27
63°
46°
28
92°
74°
29
87°
74°
30
84°
73°
1
84°
73°
2
86°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Santa Rosa
Santa Rosa's April 2026 forecast shows daily high temperatures ranging from 84° to 92°, with overnight lows between 73° and 74°. The average high for April is 87° with an average low of 73°. 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 Santa Rosa. See also: May | June | July.