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Rockville (MD)
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Weather in Rockville, Maryland for December 2025

Your guide to Rockville weather in December - trends and predictions

    Snow Forecast ❄️

  • Snowfall in Rockville during December is quite rare, with fewer than 2 snowy days on average.
    According to Rockville snow forecast for December 2025, 1 snowy day is expected until the end of the month at Friday, December 26.

    • Temperatures

  • Until now, December 2025 in Rockville is slightly cooler than the historical average by -1.6 °F.

  • The forecast for the next days in Rockville predicts temperatures to be around 3 °F, close to the historical average.

  • In general, the average temperature in Rockville at the beginning of December is 3.7 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 4.9 °F by the end of December.

    • Rain 🌧️

  • The climate of Rockville in December is notably wet, with an average of 12 rainy days, and a total of 135.5 mm of precipitation.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
18
Dry days
Average rainy days
12
Rainy days
Average snowy days
1
Snow days
Average temperatures
6°/0°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
75 %
Avg humidity

Rockville Weather December

Move between months or click on a day
November
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Overcast
4°
2
Sunny
3°
3
Sunny
5°
4
Overcast
4°
5
Patchy rain possible
2°
6
Sunny
4°
7
Partly cloudy
4°
8
Cloudy
7°
9
Moderate or heavy rain shower
5°
10
Patchy rain possible
7°
11
Moderate or heavy rain shower
7°
12
Sunny
3°
13
Overcast
4°
14
Overcast
1°
15
Sunny
1°
16
Sunny
4°
17
Overcast
6°
18
Partly cloudy
5°
19
Moderate rain
7°
20
Sunny
4°
21
Patchy rain possible
9°
22
Sunny
2°
23
Sunny
5°
24
Overcast
9°
25
Sunny
-0°
26
Moderate snow
1°
27
Sunny
-5°
28
Partly cloudy
-1°
29
Patchy rain possible
16°
30
Partly cloudy
14°
31
Fog
9°

Temperatures trend during December in Rockville

See the weather trend as well as the moving average line

December weather in Rockville day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
Dec. 1 Overcast
Overcast
 4° /-2° 0 mm 0 cm
Dec. 2 Sunny
Sunny
 3° /-2° 41.8 mm 0 cm
Dec. 3 Sunny
Sunny
 5° /-3° 0 mm 0 cm
Dec. 4 Overcast
Overcast
 4° /-3° 0 mm 0 cm
Dec. 5 Patchy rain possible
Patchy rain possible
 2° /-5° 5.3 mm 3.5 cm
Dec. 6 Sunny
Sunny
 4° /-2° 0 mm 0 cm
Dec. 7 Partly cloudy
Partly cloudy
 4° /-2° 0 mm 0 cm
Dec. 8 Cloudy
Cloudy
 7° /-2° 0 mm 0 cm
Dec. 9 Moderate or heavy rain shower
Moderate or heavy rain shower
 5° /-2° 5.1 mm 0 cm
Dec. 10 Patchy rain possible
Patchy rain possible
 7° /2° 1.4 mm 0 cm
Dec. 11 Moderate or heavy rain shower
Moderate or heavy rain shower
 7° /-1° 29.2 mm 0 cm
Dec. 12 Sunny
Sunny
 3° /-2° 0 mm 0 cm
Dec. 13 Overcast
Overcast
 4° /-2° 0 mm 0 cm
Dec. 14 Overcast
Overcast
 1° /-5° 9.1 mm 6.6 cm
Dec. 15 Sunny
Sunny
 1° /-10° 0 mm 0 cm
Dec. 16 Sunny
Sunny
 4° /-5° 0 mm 0 cm
Dec. 17 Overcast
Overcast
 6° /-1° 0 mm 0 cm
Dec. 18 Partly cloudy
Partly cloudy
 5° /-2° 0.1 mm 0 cm
Dec. 19 Moderate rain
Moderate rain
 7° /-2° 9.7 mm 0 cm
Dec. 20 Sunny
Sunny
 4° /-3° 0 mm 0 cm
Dec. 21 Patchy rain possible
Patchy rain possible
 9° /2° 0.4 mm 0 cm
Dec. 22 Sunny
Sunny
 2° /-3° 0 mm 0 cm
Dec. 23 Sunny
Sunny
 5° /-2° 0 mm 0 cm
Dec. 24 Overcast
Overcast
 9° /2° 0 mm 0 cm
Dec. 25 Sunny
Sunny
 0° /-3° 0 mm 0 cm
Dec. 26 Moderate snow
Moderate snow
 1° /-2° 0.3 mm 0.2 cm
Dec. 27 Sunny
Sunny
 -5° /-7° 0 mm 0 cm
Dec. 28 Partly cloudy
Partly cloudy
 -1° /-6° 0 mm 0 cm
Dec. 29 Patchy rain possible
Patchy rain possible
 16° /7° 5.4 mm 0 cm
Dec. 30 Partly cloudy
Partly cloudy
 14° /8° 10.2 mm 0 cm
Dec. 31 Fog
Fog
 9° /2° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Rockville in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Rockville forecast closer to your planned date for the most up-to-date weather information.
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Rockville in December - FAQ

What are the expected maximum and minimum temperatures in Rockville during December?
Prepare for cooler days with highs just around 6° and colder nights, dipping below 0°.
How much rainfall should be expected in Rockville during December?
Significant rainfall exceeding 135.5 mm is expected in Rockville during December, occurring over more than 12 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Rockville in December 2025?
Rockville typically sees 0.9 cm of snowfall during December.
What are the typical wind conditions in Rockville during December?
The average wind speed in Rockville during December is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

Rockville snow forecast December 2025

Track daily snowfall levels and discover Rockville’s snowy potential this December ❄️
On average, Rockville sees 1 snowy days during December, with approximately 0.9 cm of total snowfall.

December rainfall patterns in Rockville

Explore the daily rainfall trends and prepare for Rockvilles December weather 💧
Typically, Rockville has 12 rainy days in December with a total of 135.5 mm of rainfall.

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Location coordinates Where is Rockville?

Get accurate weather forecasts for Rockville, located at latitude 39.084 and longitude -77.153. Stay updated with localized weather information tailored for Rockville.

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