S
M
T
W
T
F
S
1
34°
13°
2
42°
19°
3
45°
29°
4
47°
28°
5
51°
40°
6
58°
45°
7
59°
32°
8
61°
31°
9
69°
42°
10
51°
34°
11
40°
30°
12
43°
26°
13
47°
29°
14
37°
28°
15
35°
27°
16
26°
10°
17
22°
0°
18
42°
19°
19
58°
34°
20
70°
42°
21
81°
45°
22
65°
31°
23
46°
24°
24
52°
29°
25
74°
33°
26
63°
33°
27
46°
26°
28
50°
17°
29
65°
36°
30
82°
46°
31
75°
43°
1
48°
35°
2
35°
34°
3
45°
38°
4
43°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Rockville
Rockville's March 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for March is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how March weather will actually feel in Rockville. See also: April | May | June.