Rockville weather in December (Maryland, United States of America)

What weather conditions can you expect in Rockville this December? Get all the weather information you need to plan your visit.

Temperatures

In December, Rockville typically experiences low temperatures and high snow/rainfall. December is known for being in the winter season. Expect daytime highs to reach approximately 9°C, with nighttime lows dipping to around -1°C.

Precipitation

Rockville in December usually receives high snow/rainfall, averaging around 103 mm for the month. Past climate data indicates that roughly 11 days will see snow/rain.

Average sunshine

Expect a moderate amount of sunlight, with approximately 130 hours. This means a pleasant mix of sun and clouds.

If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Rockville. August typically offers the best circumstances. While January, February and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Rockville climate page with graphs.

 

Rockville, monthly averages in December

Min Temperature -1°C  

Max Temperature 9°C  

Chance of Rain 37%  

Precipitation 103 mm  

Rainy days 11 days  

Humidity 64% *  

Sunshine 130 hours *  

Percentage Sunshine 45% *  

Data from: Washington DC, the United States of America (27 KM, 17 Miles).

Where to go in the United States of America in December

Find out more about the weather in the United States of America and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

Wear a base layer in cold weather; this is the #1 thing you can do to increase your overall body temperature.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

4/10

Walking

4/10

Camping

1/10

Outdoor sports

4/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Rockville.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.