S
M
T
W
T
F
S
29
83°
67°
30
85°
66°
31
88°
67°
1
87°
66°
2
89°
67°
3
90°
65°
4
90°
65°
5
89°
66°
6
86°
64°
7
75°
62°
8
77°
63°
9
80°
65°
10
82°
64°
11
85°
66°
12
84°
66°
13
85°
67°
14
85°
68°
15
84°
69°
16
86°
66°
17
82°
67°
18
84°
68°
19
80°
68°
20
79°
67°
21
80°
68°
22
80°
67°
23
81°
66°
24
81°
68°
25
82°
68°
26
83°
69°
27
84°
69°
28
86°
68°
29
86°
68°
30
86°
69°
1
83°
69°
2
84°
68°
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 75° to 90°, with overnight lows between 62° and 69°. The average high for April is 83° with an average low of 67°. 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.