S
M
T
W
T
F
S
27
77°
61°
28
76°
59°
29
76°
60°
30
72°
58°
1
69°
59°
2
73°
59°
3
75°
56°
4
74°
59°
5
76°
59°
6
73°
58°
7
74°
58°
8
74°
54°
9
66°
50°
10
63°
52°
11
70°
55°
12
66°
54°
13
68°
56°
14
65°
55°
15
71°
54°
16
69°
54°
17
71°
52°
18
61°
52°
19
60°
53°
20
64°
54°
21
69°
49°
22
65°
45°
23
56°
44°
24
57°
46°
25
62°
48°
26
68°
40°
27
57°
38°
28
57°
38°
29
58°
43°
30
63°
42°
31
66°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Rockville
Rockville's October 2026 forecast shows daily high temperatures ranging from 56° to 77°, with overnight lows between 38° and 61°. The average high for October is 67° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Rockville. See also: November | December | January.