S
M
T
W
T
F
S
29
50°
25°
30
71°
41°
31
79°
53°
1
76°
49°
2
49°
38°
3
63°
38°
4
69°
42°
5
55°
40°
6
51°
35°
7
53°
31°
8
50°
28°
9
55°
28°
10
66°
37°
11
59°
44°
12
58°
33°
13
73°
46°
14
83°
50°
15
85°
53°
16
86°
61°
17
74°
55°
18
62°
47°
19
52°
39°
20
49°
31°
21
49°
37°
22
47°
38°
23
65°
44°
24
59°
37°
25
53°
38°
26
55°
40°
27
57°
42°
28
55°
43°
29
56°
42°
30
56°
44°
1
58°
43°
2
55°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Rockville
Rockville's April 2026 forecast shows daily high temperatures ranging from 47° to 65°, with overnight lows between 37° and 44°. The average high for April is 55° with an average low of 41°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Rockville. See also: May | June | July.