Spring (March–May): Average 46–63°F, mild climate, but with more rainfall and occasional overcast days. Common activities: Outdoor walks, visiting museums. Recommended clothing: Light jacket, comfortable long-sleeved shirts and pants.
Summer (June–August): Average 72–77°F, warm and humid, occasional showers. Common activities: Swimming, picnics, outdoor sports. Recommended clothing: Short-sleeved shirts and pants, breathable clothing.
Autumn (September–November): Average 56–67°F, pleasant climate, rainfall gradually decreases, more sunny days. Common activities: Viewing autumn leaves (some species), hiking. Recommended clothing: Light jacket, long-sleeved shirts and pants.
Winter (January–February): Average 36–40°F, cold, more rainfall. Common activities: Indoor activities, visiting museums. Recommended clothing: Warm jacket, hat, scarf, gloves.
Rockville climatological average
Annual average temperature: approx. 56.5°F / Annual rainfall: approx. 979 mm / Summer humidity: 60%–70% / Rainiest month: January
Rockville monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
36.1°F
111.6
February
40.8°F
65.1
March
46.6°F
98.9
April
56.5°F
95.5
May
63.5°F
75.9
June
72.1°F
60.4
July
77.5°F
93.5
August
75.2°F
79.2
September
67.1°F
93.2
October
56.3°F
34.9
November
47.3°F
71.5
December
37.8°F
100
Rockville weather for the next seven days
12/11
Thursday
Sunny
39.4°F/25.6°F
12/12
Friday
Overcast
32.2°F/25.2°F
12/13
Saturday
Mist
39°F/25.7°F
12/14
Sunday
Heavy snow
30.2°F/20.1°F
12/15
Monday
Sunny
29.5°F/19.6°F
12/16
Tuesday
Partly Cloudy
33.3°F/23.2°F
12/17
Wednesday
Partly Cloudy
38.5°F/33.2°F
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