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December Weather in Leesburg, United States

Last updated: June 24, 2025

In Leesburg, United States, the average temperature in December hovers around 12°C (54°F), with a potential minimum dipping to -5°C (24°F) and a maximum soaring to 26°C (80°F). Be prepared for some rain, as 121 mm (4.8 in) of precipitation can be expected over 11 days. With an average humidity level of 88%, it’s best to embrace the cozy vibes of the season!

December Temperature in Leesburg

In December in Leesburg, the average temperature is 12°C (54°F). Maximums can reach 26°C (80°F), while minimums can drop as low as -5°C (24°F). This wide temperature range makes Leesburg a destination suitable for travelers seeking both warm and cool experiences during this month.

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

The chart illustrates December temperature patterns in Leesburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Leesburg, December typically has an average temperature of 12°C (54°F), with highs reaching up to 26°C (80°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec515762677580828279725853
Data source: Temperature data for Leesburg 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 Leesburg

In Leesburg in December, the total precipitation amount is 121 mm (4.8 in), which occurs over the course of 11 days.

December Precipitation Trends in Leesburg

The chart displays monthly precipitation patterns in Leesburg, 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 Leesburg, December typically receives around 121 mm (4.8 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec7911486106821001081031099256121
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Leesburg

In Leesburg in December, humidity is 88%. With an average temperature of 12°C (54°F), this humidity feels like a thick, damp blanket, making traveling a bit uncomfortable as the air clings to your skin, causing you to sweat even in cooler weather.

December Average Humidity in Leesburg

This chart illustrates the average monthly humidity levels in Leesburg, 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 Leesburg is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%82%80%76%73%74%80%79%83%77%84%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Leesburg

In Leesburg in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Leesburg for better planning.

Maximum UV Index Levels in Leesburg for December

The chart shows the monthly maximum UV Index (UVI) for Leesburg 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 Leesburg typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589101111111110864
Data source: Leesburg 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 Leesburg Compares to Other Months

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

This table compares monthly weather conditions in Leesburg, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (51°F)79 mm (3.1 inches)85%moderate
February Weather14°C (57°F)114 mm (4.5 inches)82%very high
March Weather16°C (62°F)86 mm (3.4 inches)80%very high
April Weather19°C (67°F)106 mm (4.2 inches)76%very high
May Weather24°C (75°F)82 mm (3.2 inches)73%extreme
June Weather27°C (80°F)100 mm (3.9 inches)74%extreme
July Weather28°C (82°F)107 mm (4.2 inches)80%extreme
August Weather28°C (82°F)103 mm (4.0 inches)79%extreme
September Weather26°C (80°F)109 mm (4.3 inches)83%very high
October Weather22°C (72°F)92 mm (3.6 inches)77%very high
November Weather14°C (58°F)56 mm (2.2 inches)84%high
December Weather12°C (54°F)121 mm (4.8 inches)88%moderate

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