S
M
T
W
T
F
S
31
86°
62°
1
85°
60°
2
89°
64°
3
86°
63°
4
82°
64°
5
83°
63°
6
86°
65°
7
82°
65°
8
84°
66°
9
84°
66°
10
88°
65°
11
85°
61°
12
83°
66°
13
84°
65°
14
83°
66°
15
85°
66°
16
86°
65°
17
89°
67°
18
90°
67°
19
86°
66°
20
86°
67°
21
87°
68°
22
89°
68°
23
91°
67°
24
87°
68°
25
88°
68°
26
88°
67°
27
89°
69°
28
88°
69°
29
92°
68°
30
93°
69°
1
90°
65°
2
91°
64°
3
89°
64°
4
90°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Rockville
Rockville's June 2026 forecast shows daily high temperatures ranging from 82° to 93°, with overnight lows between 60° and 69°. The average high for June is 87° with an average low of 66°. 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 Rockville. See also: July | August | September.