S
M
T
W
T
F
S
29
48°
26°
30
63°
41°
31
74°
43°
1
61°
43°
2
43°
38°
3
68°
38°
4
64°
39°
5
60°
40°
6
52°
33°
7
56°
32°
8
49°
29°
9
48°
28°
10
59°
45°
11
63°
34°
12
58°
43°
13
66°
57°
14
78°
53°
15
70°
51°
16
70°
53°
17
71°
49°
18
61°
42°
19
58°
43°
20
56°
43°
21
58°
46°
22
61°
47°
23
65°
42°
24
58°
46°
25
58°
45°
26
57°
45°
27
56°
44°
28
58°
43°
29
57°
43°
30
58°
42°
1
59°
49°
2
67°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Riverside
Riverside's April 2026 forecast shows daily high temperatures ranging from 56° to 78°, with overnight lows between 34° and 57°. The average high for April is 62° with an average low of 46°. 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 Riverside. See also: May | June | July.