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December Weather in Blacksburg, United States

Last updated: June 24, 2025

In Blacksburg, United States, the average temperature in December hovers around 4°C (40°F). Expect minimums to dip as low as -14°C (7°F) and feel the warmth of maximums reaching 20°C (68°F). With an average precipitation of 87 mm (3.4 in) spread over 8 days, and a high humidity level of 86%, it’s wise to prepare for a chilly and wet month ahead!

December Temperature in Blacksburg

In December in Blacksburg, the average temperature is 4°C (40°F). Maximums can reach 20°C (68°F), while minimums can drop as low as -14°C (7°F). Be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates December temperature patterns in Blacksburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Blacksburg, December typically has an average temperature of 4°C (40°F), with highs reaching up to 20°C (68°F) and lows dropping to around -14°C (7°F).
JanFebMarAprMayJunJulAugSepOctNovDec354145546369747267584339
Data source: Temperature data for Blacksburg 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 Blacksburg

In Blacksburg in December, the precipitation amount is 87 mm (3.4 in), which occurs over a span of 8 days.

December Precipitation Trends in Blacksburg

The chart displays monthly precipitation patterns in Blacksburg, 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 Blacksburg, December typically receives around 87 mm (3.4 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec681138510411583577495966387
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Blacksburg

In Blacksburg in December humidity is 86%. With an average temperature of 4°C (40°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and travel cumbersome as you navigate through a thick, heavy air that clings to your skin.

December Average Humidity in Blacksburg

This chart illustrates the average monthly humidity levels in Blacksburg, 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 Blacksburg is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%84%83%83%79%66%68%78%89%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Blacksburg

In Blacksburg 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 Blacksburg, you can check the information here.

Maximum UV Index Levels in Blacksburg for December

The chart shows the monthly maximum UV Index (UVI) for Blacksburg 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 Blacksburg typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36810111111109753
Data source: Blacksburg 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 Blacksburg Compares to Other Months

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

This table compares monthly weather conditions in Blacksburg, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (35°F)68 mm (2.7 inches)87%moderate
February Weather5°C (41°F)113 mm (4.4 inches)87%high
March Weather7°C (46°F)85 mm (3.3 inches)86%very high
April Weather12°C (54°F)104 mm (4.1 inches)84%very high
May Weather17°C (63°F)115 mm (4.5 inches)83%extreme
June Weather21°C (70°F)83 mm (3.3 inches)83%extreme
July Weather23°C (74°F)57 mm (2.3 inches)79%extreme
August Weather22°C (73°F)74 mm (2.9 inches)66%very high
September Weather20°C (68°F)95 mm (3.7 inches)68%very high
October Weather14°C (58°F)96 mm (3.8 inches)78%high
November Weather6°C (44°F)63 mm (2.5 inches)89%moderate
December Weather4°C (40°F)87 mm (3.4 inches)86%moderate

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