S
M
T
W
T
F
S
29
87°
68°
30
89°
67°
31
88°
71°
1
90°
75°
2
90°
76°
3
89°
76°
4
91°
77°
5
78°
58°
6
76°
59°
7
80°
56°
8
79°
69°
9
84°
71°
10
85°
72°
11
84°
73°
12
87°
76°
13
86°
76°
14
88°
76°
15
89°
75°
16
88°
76°
17
89°
76°
18
88°
68°
19
72°
69°
20
79°
71°
21
81°
73°
22
84°
73°
23
85°
74°
24
87°
75°
25
88°
72°
26
88°
70°
27
86°
72°
28
86°
71°
29
87°
70°
30
92°
73°
1
91°
74°
2
90°
74°
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 72° to 92°, with overnight lows between 68° and 76°. The average high for April is 86° with an average low of 72°. 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.