Saint Mary's County (California)
December
Weather in Saint Mary's County, Maryland for December 2025
Your guide to Saint Mary's County weather in December - trends and predictions
In general, the average temperature in Saint Mary's County at the beginning of December is 5 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 8.6 °F by the end of December.
The climate of Saint Mary's County in December is notably wet, with an average of 14 rainy days, and a total of 135.1 mm of precipitation.
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Temperatures
Rain 🌧️
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17
Dry days
14
Rainy days
0
Snow days
7°/2°
Temperatures
22 km/h
Avg max wind
72 %
Avg humidity
Saint Mary's County Weather December
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Temperatures trend during December in Saint Mary's County
See the weather trend as well as the moving average line
December weather in Saint Mary's County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 |  Overcast | 7° /0° | 0.1 mm | 2 | |
| Dec. 2 |  Partly cloudy | 4° /-1° | 0 mm | 2 | |
| Dec. 3 |  Sunny | 6° /-1° | 0 mm | 3 | |
| Dec. 4 | Partly cloudy | 6° /-1° | 0 mm | 3 | |
| Dec. 5 |  Patchy rain possible | 5° /0° | 0.8 mm | 2 | |
| Dec. 6 | Sunny | 2° /-1° | 0 mm | 2 | |
| Dec. 7 | Partly cloudy | 5° /-1° | 0 mm | 3 | |
| Dec. 8 | Overcast | 13° /2° | 0 mm | 3 | |
| Dec. 9 |  Heavy rain at times | 11° /6° | 1.5 mm | 3 | |
| Dec. 10 | Overcast | 13° /7° | 5.4 mm | 3 | |
| Dec. 11 |  Moderate or heavy rain shower | 14° /4° | 75.6 mm | 3 | |
| Dec. 12 | Sunny | 6° /2° | 0 mm | 3 | |
| Dec. 13 |  Cloudy | 5° /1° | 0 mm | 2 | |
| Dec. 14 | Partly cloudy | 3° /0° | 0 mm | 2 | |
| Dec. 15 | Overcast | 7° /2° | 2.3 mm | 2 | |
| Dec. 16 | Moderate rain at times | 10° /7° | 4.5 mm | 3 | |
| Dec. 17 | Overcast | 15° /10° | 0 mm | 4 | |
| Dec. 18 | Overcast | 12° /4° | 1.2 mm | 3 | |
| Dec. 19 | Overcast | 10° /4° | 1.4 mm | 3 | |
| Dec. 20 | Patchy rain possible | 5° /3° | 0.7 mm | 2 | |
| Dec. 21 | Overcast | 3° /0° | 0 mm | 1 | |
| Dec. 22 | Sunny | 1° /-2° | 0 mm | 2 | |
| Dec. 23 | Cloudy | 0° /-3° | 0 mm | 1 | |
| Dec. 24 | Patchy rain possible | 3° /0° | 0.4 mm | 1 | |
| Dec. 25 | Cloudy | 4° /1° | 0 mm | 1 | |
| Dec. 26 | Cloudy | 4° /0° | 0 mm | 1 | |
| Dec. 27 | Partly cloudy | 6° /1° | 0.4 mm | 3 | |
| Dec. 28 | Moderate rain at times | 10° /4° | 3.8 mm | 3 | |
| Dec. 29 | Overcast | 14° /9° | 18.2 mm | 3 | |
| Dec. 30 | Moderate or heavy rain shower | 13° /7° | 18.8 mm | 3 | |
| Dec. 31 | Cloudy | 9° /6° | 0 mm | 2 | |
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Important Notice
Our weather forecast for Saint Mary's County 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 Saint Mary's County forecast closer to your planned date for the most up-to-date weather information.
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Saint Mary's County in December - FAQ
What are the expected maximum and minimum temperatures in Saint Mary's County during December?
Prepare for cooler days with highs just around 7° and colder nights, dipping below 2°.
How much rainfall should be expected in Saint Mary's County during December?
Significant rainfall exceeding 135.1 mm is expected in Saint Mary's County during December, occurring over more than 14 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Saint Mary's County in December 2025?
Saint Mary's County typically sees 0 cm of snowfall during December.
What are the typical wind conditions in Saint Mary's County during December?
The average wind speed in Saint Mary's County during December is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Saint Mary's County
Explore the daily rainfall trends and prepare for Saint Mary's Countys December weather 💧
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Where is Saint Mary's County?Get accurate weather forecasts for Saint Mary's County, located at latitude 38.3 and longitude -76.507. Stay updated with localized weather information tailored for Saint Mary's County.
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