S
M
T
W
T
F
S
29
67°
45°
30
77°
59°
31
85°
54°
1
85°
61°
2
87°
57°
3
87°
59°
4
87°
61°
5
69°
47°
6
70°
45°
7
74°
48°
8
74°
52°
9
76°
52°
10
81°
56°
11
85°
57°
12
84°
60°
13
85°
58°
14
86°
59°
15
86°
61°
16
85°
60°
17
80°
57°
18
76°
49°
19
75°
54°
20
79°
56°
21
79°
56°
22
78°
55°
23
79°
56°
24
79°
56°
25
80°
55°
26
81°
57°
27
80°
56°
28
77°
54°
29
77°
54°
30
74°
56°
1
73°
55°
2
74°
56°
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 69° to 86°, with overnight lows between 45° and 61°. The average high for April is 78° with an average low of 55°. 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.