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December Weather in Richmond, United States

Last updated: June 24, 2025

In December, the average temperature in Richmond, United States hovers around 5°C (42°F). Expect chilly days, with temperatures dipping as low as -12°C (11°F) and occasionally reaching a pleasant 21°C (70°F). Rain is not uncommon, with precipitation reaching 130 mm (5.1 in) over approximately 9 days. Be prepared for the humidity, which averages a moist 88%!

December Temperature in Richmond

In December in Richmond, the average temperature is 5°C (42°F). Maximum temperatures can reach 21°C (70°F), while the minimum can drop as low as -12°C (11°F). It's advisable to pack layers for your trip, as the temperature can vary significantly throughout the day.

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

The chart illustrates December temperature patterns in Richmond, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Richmond, December typically has an average temperature of 5°C (42°F), with highs reaching up to 21°C (70°F) and lows dropping to around -12°C (11°F).
JanFebMarAprMayJunJulAugSepOctNovDec374248566773787671614642
Data source: Temperature data for Richmond 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 Richmond

In Richmond in December, the precipitation amount is 130 mm (5.1 in) over the course of 9 days.

December Precipitation Trends in Richmond

The chart displays monthly precipitation patterns in Richmond, 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 Richmond, December typically receives around 130 mm (5.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec941491251331151639410211111182130
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Richmond

In Richmond in December humidity is 88%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less appealing and leading you to seek warmth indoors instead.

December Average Humidity in Richmond

This chart illustrates the average monthly humidity levels in Richmond, 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 Richmond is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%87%84%84%83%79%66%67%76%89%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Richmond

In Richmond 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 Richmond, you can check the information here.

Maximum UV Index Levels in Richmond for December

The chart shows the monthly maximum UV Index (UVI) for Richmond 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 Richmond typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3679101111109753
Data source: Richmond 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 Richmond Compares to Other Months

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

This table compares monthly weather conditions in Richmond, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)94 mm (3.7 inches)88%moderate
February Weather5°C (42°F)149 mm (5.9 inches)88%high
March Weather9°C (49°F)125 mm (4.9 inches)87%high
April Weather13°C (56°F)133 mm (5.3 inches)84%very high
May Weather20°C (67°F)115 mm (4.5 inches)84%very high
June Weather23°C (74°F)163 mm (6.4 inches)83%extreme
July Weather25°C (78°F)93 mm (3.7 inches)79%extreme
August Weather24°C (76°F)102 mm (4.0 inches)66%very high
September Weather22°C (72°F)111 mm (4.4 inches)67%very high
October Weather16°C (61°F)111 mm (4.4 inches)76%high
November Weather8°C (46°F)82 mm (3.2 inches)89%moderate
December Weather5°C (42°F)130 mm (5.1 inches)88%moderate

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