S
M
T
W
T
F
S
29
58°
21°
30
73°
39°
31
81°
55°
1
82°
52°
2
52°
41°
3
66°
41°
4
78°
43°
5
57°
42°
6
58°
36°
7
52°
26°
8
53°
27°
9
59°
34°
10
70°
49°
11
67°
39°
12
63°
47°
13
74°
56°
14
78°
55°
15
70°
49°
16
62°
44°
17
60°
47°
18
67°
48°
19
67°
43°
20
62°
41°
21
67°
47°
22
69°
48°
23
70°
48°
24
70°
46°
25
69°
41°
26
58°
43°
27
58°
39°
28
61°
41°
29
61°
39°
30
59°
39°
1
62°
42°
2
63°
40°
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 52° to 78°, with overnight lows between 26° and 56°. The average high for April is 64° 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.