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December Weather in Harrisonburg, United States

Last updated: June 24, 2025

In December, the average temperature in Harrisonburg, United States hovers around 3°C (39°F). Be prepared for a wide range of temperatures, as lows can dip to -13°C (8°F), while highs may reach up to 21°C (69°F). With an average precipitation of 81 mm (3.2 in) over 8 days, it’s essential to pack an umbrella! Additionally, expect high humidity levels at around 85%, making the air feel even cooler.

December Temperature in Harrisonburg

In December in Harrisonburg, the average temperature is 3°C (39°F). The maximum can reach 21°C (69°F), and the minimum can be as low as -13°C (8°F). Be sure to pack layers to accommodate the chilly nights and potentially warm days when traveling during this month.

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

The chart illustrates December temperature patterns in Harrisonburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harrisonburg, December typically has an average temperature of 3°C (39°F), with highs reaching up to 21°C (69°F) and lows dropping to around -13°C (8°F).
JanFebMarAprMayJunJulAugSepOctNovDec343944546371767468584338
Data source: Temperature data for Harrisonburg 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 Harrisonburg

In Harrisonburg in December, the precipitation amount is 81 mm (3.2 in) over the course of 8 days.

December Precipitation Trends in Harrisonburg

The chart displays monthly precipitation patterns in Harrisonburg, 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 Harrisonburg, December typically receives around 81 mm (3.2 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec57876699105886597951007481
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Harrisonburg

In Harrisonburg in December, humidity is 85%. With an average temperature of 3°C (39°F), this humidity feels like a damp chill that clings to your clothes, making it challenging for travelers to stay comfortable while exploring the area.

December Average Humidity in Harrisonburg

This chart illustrates the average monthly humidity levels in Harrisonburg, 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 Harrisonburg is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%86%84%78%79%70%59%68%80%87%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Harrisonburg

In Harrisonburg 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 Harrisonburg, you can check the information here.

Maximum UV Index Levels in Harrisonburg for December

The chart shows the monthly maximum UV Index (UVI) for Harrisonburg 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 Harrisonburg typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579111010109753
Data source: Harrisonburg 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 Harrisonburg Compares to Other Months

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

This table compares monthly weather conditions in Harrisonburg, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)57 mm (2.3 inches)86%moderate
February Weather4°C (39°F)87 mm (3.4 inches)86%moderate
March Weather7°C (45°F)66 mm (2.6 inches)86%high
April Weather12°C (54°F)99 mm (3.9 inches)84%very high
May Weather17°C (64°F)105 mm (4.1 inches)78%extreme
June Weather22°C (71°F)88 mm (3.5 inches)79%very high
July Weather25°C (77°F)65 mm (2.6 inches)70%very high
August Weather23°C (74°F)97 mm (3.8 inches)59%very high
September Weather20°C (68°F)95 mm (3.8 inches)68%very high
October Weather15°C (59°F)100 mm (3.9 inches)80%high
November Weather6°C (44°F)74 mm (2.9 inches)86%moderate
December Weather3°C (39°F)81 mm (3.2 inches)85%moderate

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