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Weather in Gaithersburg, Maryland for December 2026

Your guide to Gaithersburg weather in December - trends and predictions

    Snow Forecast ❄️

  • With an average of 5 snowy days, Gaithersburg usually enjoys a light touch of snow in December.

    • Temperatures

  • In general, the average temperature in Gaithersburg at the beginning of December is 3.3 °F. As the month progressed, temperatures tended to slightly increase, reaching an average of 3.4 °F by the end of December.

    • More

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

Average dry days
23
Dry days
Average rainy days
3
Rainy days
Average snowy days
5
Snow days
Average temperatures
3°/-3°
Temperatures
Average wind speed
20 km/h
Avg max wind
Average humidity
72 %
Avg humidity

Gaithersburg Weather December

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

Temperatures trend during December in Gaithersburg

See the weather trend as well as the moving average line

December weather in Gaithersburg day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
Dec. 1 Partly cloudy
Partly cloudy
 3° /-3° 0 mm 0 cm
Dec. 2 Moderate or heavy rain shower
Moderate or heavy rain shower
 2° /0° 83.2 mm 0 cm
Dec. 3 Sunny
Sunny
 5° /-3° 0 mm 0 cm
Dec. 4 Partly cloudy
Partly cloudy
 4° /-3° 0 mm 0 cm
Dec. 5 Moderate snow
Moderate snow
 0° /-6° 9.3 mm 6.7 cm
Dec. 6 Mist
Mist
 6° /0° 0 mm 0 cm
Dec. 7 Overcast
Overcast
 3° /0° 0 mm 0 cm
Dec. 8 Cloudy
Cloudy
 1° /-5° 0 mm 0 cm
Dec. 9 Overcast
Overcast
 0° /-8° 0 mm 0 cm
Dec. 10 Overcast
Overcast
 4° /-2° 0 mm 0 cm
Dec. 11 Cloudy
Cloudy
 1° /-4° 0 mm 0 cm
Dec. 12 Overcast
Overcast
 0° /-3° 0 mm 0 cm
Dec. 13 Mist
Mist
 4° /-2° 0 mm 0 cm
Dec. 14 Heavy snow
Heavy snow
 0° /-6° 14.9 mm 10.8 cm
Dec. 15 Overcast
Overcast
 -2° /-8° 0 mm 0 cm
Dec. 16 Cloudy
Cloudy
 3° /-4° 0 mm 0 cm
Dec. 17 Overcast
Overcast
 4° /-2° 0 mm 0 cm
Dec. 18 Freezing fog
Freezing fog
 7° /-3° 0 mm 0 cm
Dec. 19 Heavy rain
Heavy rain
 11° /-2° 51.2 mm 0 cm
Dec. 20 Partly cloudy
Partly cloudy
 1° /-5° 0 mm 0 cm
Dec. 21 Overcast
Overcast
 6° /-2° 0 mm 0 cm
Dec. 22 Partly cloudy
Partly cloudy
 3° /-5° 0 mm 0 cm
Dec. 23 Moderate or heavy snow showers
Moderate or heavy snow showers
 6° /0° 6.7 mm 2 cm
Dec. 24 Overcast
Overcast
 6° /2° 0 mm 0 cm
Dec. 25 Patchy moderate snow
Patchy moderate snow
 4° /0° 12.3 mm 1.1 cm
Dec. 26 Patchy moderate snow
Patchy moderate snow
 0° /-2° 8 mm 5.8 cm
Dec. 27 Mist
Mist
 3° /0° 2 mm 0 cm
Dec. 28 Mist
Mist
 2° /-3° 0 mm 0 cm
Dec. 29 Overcast
Overcast
 12° /-1° 0 mm 0 cm
Dec. 30 Sunny
Sunny
 1° /-4° 0 mm 0 cm
Dec. 31 Overcast
Overcast
 2° /-5° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Gaithersburg 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 Gaithersburg forecast closer to your planned date for the most up-to-date weather information.
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Gaithersburg in December - FAQ

What are the expected maximum and minimum temperatures in Gaithersburg during December?

Brace for cold days with temperatures not exceeding 3° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.

How much rainfall should be expected in Gaithersburg during December?

Significant rainfall exceeding 187.6 mm is expected in Gaithersburg during December, occurring over more than 3 days. Preparing for wet conditions is recommended in your planning.

Will it snow in Gaithersburg in December 2026?

Gaithersburg experiences an average snowfall of 26.4 cm during December, occurring over 5 days.

What are the typical wind conditions in Gaithersburg during December?

The average wind speed in Gaithersburg during December is 20 km/h, suggesting breezy to windy conditions, depending on your activities.

Gaithersburg snow forecast December 2026

Track daily snowfall levels and discover Gaithersburg’s snowy potential this December ❄️
On average, Gaithersburg sees 5 snowy days during December, with approximately 26.4 cm of total snowfall.

December rainfall patterns in Gaithersburg

Explore the daily rainfall trends and prepare for Gaithersburgs December weather 💧
Typically, Gaithersburg has 3 rainy days in December with a total of 187.6 mm of rainfall.

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Location coordinates Where is Gaithersburg?

Get accurate weather forecasts for Gaithersburg, located at latitude 39.143 and longitude -77.201. Stay updated with localized weather information tailored for Gaithersburg.

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