S
M
T
W
T
F
S
31
66°
41°
1
60°
43°
2
74°
40°
3
79°
45°
4
76°
48°
5
82°
51°
6
80°
56°
7
82°
59°
8
73°
54°
9
75°
57°
10
74°
59°
11
85°
62°
12
84°
69°
13
86°
65°
14
83°
59°
15
80°
60°
16
72°
55°
17
73°
53°
18
74°
59°
19
77°
64°
20
81°
58°
21
78°
55°
22
70°
56°
23
72°
59°
24
82°
52°
25
82°
62°
26
77°
60°
27
76°
59°
28
81°
58°
29
81°
58°
30
79°
59°
1
81°
60°
2
84°
64°
3
80°
60°
4
81°
61°
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 72° to 84°, with overnight lows between 52° and 64°. 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 Rockville. See also: July | August | September.