S
M
T
W
T
F
S
26
86°
63°
27
86°
68°
28
88°
67°
29
81°
65°
30
82°
66°
31
87°
64°
1
89°
64°
2
80°
74°
3
88°
70°
4
87°
67°
5
86°
72°
6
92°
72°
7
91°
70°
8
92°
70°
9
91°
68°
10
93°
71°
11
94°
72°
12
85°
69°
13
86°
70°
14
84°
68°
15
82°
69°
16
83°
66°
17
82°
62°
18
80°
64°
19
82°
66°
20
79°
63°
21
80°
67°
22
86°
70°
23
88°
71°
24
80°
63°
25
80°
67°
26
84°
67°
27
87°
70°
28
87°
70°
29
86°
68°
30
79°
64°
31
79°
68°
1
78°
68°
2
78°
67°
3
80°
67°
4
81°
69°
5
84°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Rockville
Rockville's August 2026 forecast shows daily high temperatures ranging from 78° to 94°, with overnight lows between 62° and 72°. The average high for August is 84° with an average low of 68°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Rockville. See also: September | October | November.
