S
M
T
W
T
F
S
31
74°
42°
1
66°
48°
2
76°
55°
3
79°
59°
4
85°
62°
5
89°
66°
6
89°
63°
7
76°
55°
8
72°
55°
9
75°
57°
10
80°
60°
11
80°
61°
12
85°
62°
13
83°
61°
14
82°
58°
15
78°
54°
16
74°
54°
17
75°
55°
18
76°
56°
19
79°
57°
20
81°
57°
21
79°
58°
22
77°
57°
23
77°
61°
24
78°
63°
25
80°
58°
26
78°
58°
27
81°
65°
28
84°
64°
29
81°
61°
30
79°
59°
1
79°
60°
2
80°
60°
3
81°
65°
4
85°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Riverside
Riverside's June 2026 forecast shows daily high temperatures ranging from 72° to 89°, with overnight lows between 54° and 66°. The average high for June is 80° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Riverside. See also: July | August | September.