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°
55°
10
70°
53°
11
67°
48°
12
59°
44°
13
67°
45°
14
69°
47°
15
72°
48°
16
78°
49°
17
83°
50°
18
74°
49°
19
71°
51°
20
73°
51°
21
73°
52°
22
66°
45°
23
70°
47°
24
70°
48°
25
71°
49°
26
70°
49°
27
70°
47°
28
71°
46°
29
71°
46°
30
72°
47°
1
72°
48°
2
73°
54°
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 59° to 83°, with overnight lows between 44° and 55°. The average high for April is 71° with an average low of 49°. 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.