S
M
T
W
T
F
S
29
88°
54°
30
78°
52°
31
70°
56°
1
63°
55°
2
66°
42°
3
77°
45°
4
82°
47°
5
85°
47°
6
80°
49°
7
77°
50°
8
82°
54°
9
76°
54°
10
65°
53°
11
62°
49°
12
59°
41°
13
70°
46°
14
76°
50°
15
74°
52°
16
72°
51°
17
72°
51°
18
73°
50°
19
71°
52°
20
71°
50°
21
70°
41°
22
67°
48°
23
68°
44°
24
69°
45°
25
68°
46°
26
68°
45°
27
69°
45°
28
68°
44°
29
69°
45°
30
69°
44°
1
70°
45°
2
71°
52°
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 82°, with overnight lows between 41° and 54°. The average high for April is 70° with an average low of 48°. 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.