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December Weather in Fallston, United States

Last updated: June 24, 2025

In December, the average temperature in Fallston, United States hovers around 7°C (45°F). While you might experience a chilly minimum of -8°C (18°F), warmer days can reach up to a pleasant 24°C (75°F). Be prepared for some rain, with an average precipitation of 122 mm (4.8 in) spread over 9 days. You'll also notice a significant average humidity of 87%, making it a moist month overall.

December Temperature in Fallston

In December in Fallston, the average temperature is 7°C (45°F). Maximums can reach 24°C (75°F) and minimums can be as low as -8°C (18°F). Travelers should be prepared for a wide range of temperatures and dress in layers to enjoy all that Fallston has to offer.

December Weather in Fallston: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Fallston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fallston, December typically has an average temperature of 7°C (45°F), with highs reaching up to 24°C (75°F) and lows dropping to around -8°C (18°F).
JanFebMarAprMayJunJulAugSepOctNovDec424752606975797773634945
Data source: Temperature data for Fallston 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 Fallston

In Fallston in December, the precipitation amount is 122 mm (4.8 in) over a span of 9 days.

December Precipitation Trends in Fallston

The chart displays monthly precipitation patterns in Fallston, 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 Fallston, December typically receives around 122 mm (4.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec92130103120124939112613512391122
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Fallston

In Fallston in December, humidity is 87%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that seeps into your bones, making outdoor adventures somewhat uncomfortable and urging travelers to seek refuge in cozy cafes or warm indoor activities.

December Average Humidity in Fallston

This chart illustrates the average monthly humidity levels in Fallston, 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 Fallston is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%84%82%83%82%80%74%75%79%87%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Fallston

In Fallston 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 Fallston, you can check the information here.

Maximum UV Index Levels in Fallston for December

The chart shows the monthly maximum UV Index (UVI) for Fallston 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 Fallston typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810101111109853
Data source: Fallston 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 Fallston Compares to Other Months

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

This table compares monthly weather conditions in Fallston, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)92 mm (3.6 inches)86%moderate
February Weather8°C (47°F)130 mm (5.1 inches)85%high
March Weather11°C (52°F)103 mm (4.1 inches)84%very high
April Weather16°C (60°F)120 mm (4.7 inches)82%very high
May Weather20°C (69°F)124 mm (4.9 inches)83%very high
June Weather24°C (75°F)93 mm (3.7 inches)82%extreme
July Weather26°C (79°F)91 mm (3.6 inches)80%extreme
August Weather25°C (77°F)126 mm (5.0 inches)74%very high
September Weather23°C (73°F)135 mm (5.3 inches)75%very high
October Weather17°C (64°F)123 mm (4.8 inches)79%very high
November Weather10°C (50°F)91 mm (3.6 inches)87%moderate
December Weather7°C (45°F)122 mm (4.8 inches)87%moderate

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