December Weather in Port Deposit, United States

Last updated: June 24, 2025

In December, the average temperature in Port Deposit, United States hovers around 5°C (41°F), with a minimum of -10°C (15°F) and a maximum reaching 18°C (65°F). Expect about 98 mm (3.9 in) of precipitation spread over 9 days, and a high average humidity of 84%. Prepare for a chilly and damp month!

December Temperature in Port Deposit

In December in Port Deposit, the average temperature is 5°C (41°F). Maximums can reach 18°C (65°F), while minimums can drop as low as -10°C (15°F). Be prepared for a wide range of temperatures and pack accordingly for your travels.

December Weather in Port Deposit: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Port Deposit, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Port Deposit, December typically has an average temperature of 5°C (41°F), with highs reaching up to 18°C (65°F) and lows dropping to around -10°C (15°F).
JanFebMarAprMayJunJulAugSepOctNovDec363945566575807872624740
Data source: Temperature data for Port Deposit generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Port Deposit

In Port Deposit in December, the precipitation amount is 98 mm (3.9 in) spread over a duration of 9 days.

December Precipitation Trends in Port Deposit

The chart displays monthly precipitation patterns in Port Deposit, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Port Deposit, December typically receives around 98 mm (3.9 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec60979710013497129133941048198
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Port Deposit

In Port Deposit in December humidity is 84%. With an average temperature of 5°C (41°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable as you navigate through the cold, heavy air that clings to your skin.

December Average Humidity in Port Deposit

This chart illustrates the average monthly humidity levels in Port Deposit, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Port Deposit is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%83%81%78%79%74%72%75%81%85%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Port Deposit

In Port Deposit in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Port Deposit, you can check the information here.

Maximum UV Index Levels in Port Deposit for December

The chart shows the monthly maximum UV Index (UVI) for Port Deposit in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Port Deposit typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098643
Data source: Port Deposit December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in Port Deposit Compares to Other Months

Weather in Port Deposit varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Port Deposit, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Port Deposit, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)60 mm (2.4 inches)84%moderate
February Weather4°C (40°F)97 mm (3.8 inches)83%moderate
March Weather7°C (45°F)97 mm (3.8 inches)83%high
April Weather13°C (56°F)100 mm (3.9 inches)81%very high
May Weather18°C (65°F)134 mm (5.3 inches)78%very high
June Weather24°C (75°F)96 mm (3.8 inches)79%very high
July Weather27°C (80°F)129 mm (5.1 inches)74%very high
August Weather25°C (78°F)133 mm (5.2 inches)72%very high
September Weather22°C (72°F)94 mm (3.7 inches)75%very high
October Weather17°C (62°F)104 mm (4.1 inches)81%high
November Weather9°C (48°F)81 mm (3.2 inches)85%moderate
December Weather5°C (41°F)98 mm (3.9 inches)84%moderate

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