S
M
T
W
T
F
S
31
79°
63°
1
86°
65°
2
85°
51°
3
85°
57°
4
87°
67°
5
88°
67°
6
84°
69°
7
83°
69°
8
81°
67°
9
86°
69°
10
92°
69°
11
91°
70°
12
90°
68°
13
85°
63°
14
84°
64°
15
79°
60°
16
79°
61°
17
82°
60°
18
83°
64°
19
82°
65°
20
81°
63°
21
78°
57°
22
77°
61°
23
82°
67°
24
87°
68°
25
88°
66°
26
85°
64°
27
79°
66°
28
82°
66°
29
82°
65°
30
85°
66°
1
84°
65°
2
85°
66°
3
87°
67°
4
86°
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 77° to 92°, with overnight lows between 57° and 70°. The average high for June is 84° with an average low of 65°. 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.