S
M
T
W
T
F
S
29
88°
54°
30
83°
53°
31
67°
55°
1
71°
53°
2
67°
52°
3
74°
47°
4
81°
45°
5
86°
50°
6
84°
55°
7
79°
50°
8
83°
51°
9
79°
58°
10
72°
55°
11
70°
52°
12
65°
49°
13
67°
50°
14
71°
45°
15
74°
47°
16
71°
47°
17
72°
46°
18
79°
51°
19
80°
49°
20
68°
49°
21
63°
48°
22
67°
50°
23
74°
49°
24
75°
50°
25
76°
50°
26
74°
53°
27
75°
54°
28
75°
52°
29
77°
49°
30
72°
47°
1
74°
48°
2
76°
50°
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 63° to 80°, with overnight lows between 46° and 54°. The average high for April is 73° with an average low of 50°. 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.