S
M
T
W
T
F
S
29
57°
28°
30
74°
44°
31
80°
60°
1
78°
51°
2
51°
41°
3
66°
41°
4
70°
42°
5
58°
42°
6
55°
41°
7
53°
29°
8
52°
31°
9
52°
38°
10
70°
51°
11
65°
42°
12
59°
49°
13
79°
58°
14
82°
54°
15
71°
46°
16
63°
41°
17
60°
45°
18
68°
49°
19
68°
43°
20
63°
42°
21
68°
47°
22
68°
48°
23
67°
48°
24
69°
47°
25
70°
41°
26
60°
42°
27
59°
41°
28
62°
41°
29
61°
40°
30
60°
40°
1
62°
43°
2
63°
42°
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 82°, with overnight lows between 29° and 58°. The average high for April is 64° with an average low of 44°. 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.