S
M
T
W
T
F
S
31
78°
50°
1
76°
54°
2
77°
51°
3
81°
57°
4
83°
63°
5
85°
66°
6
84°
67°
7
86°
67°
8
82°
67°
9
84°
66°
10
86°
68°
11
83°
68°
12
84°
64°
13
83°
65°
14
82°
62°
15
78°
60°
16
74°
58°
17
77°
59°
18
79°
60°
19
79°
61°
20
80°
67°
21
80°
67°
22
80°
66°
23
81°
67°
24
82°
65°
25
81°
67°
26
85°
69°
27
85°
68°
28
82°
64°
29
81°
62°
30
82°
61°
1
81°
62°
2
82°
62°
3
82°
69°
4
83°
63°
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 74° to 86°, with overnight lows between 51° and 69°. The average high for June is 82° with an average low of 64°. 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.