S
M
T
W
T
F
S
29
73°
37°
30
58°
44°
31
60°
41°
1
56°
46°
2
54°
37°
3
57°
28°
4
65°
31°
5
72°
38°
6
76°
43°
7
77°
39°
8
67°
41°
9
73°
43°
10
74°
47°
11
74°
48°
12
67°
47°
13
64°
42°
14
67°
43°
15
67°
45°
16
70°
47°
17
66°
46°
18
65°
45°
19
66°
39°
20
58°
33°
21
59°
34°
22
64°
39°
23
59°
34°
24
60°
42°
25
61°
38°
26
64°
39°
27
70°
42°
28
72°
46°
29
73°
47°
30
73°
47°
1
74°
48°
2
75°
49°
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 58° to 77°, with overnight lows between 33° and 49°. The average high for April is 68° with an average low of 43°. 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.