December Weather in Richlands, United States

Last updated: June 24, 2025

In December, the average temperature in Richlands, United States hovers around 10°C (50°F), making it a month of notable variability. You might experience lows of -6°C (22°F) and highs up to 25°C (78°F). With an average humidity of 86% and 116 mm (4.6 in) of precipitation spread over 10 days, be prepared for a mix of conditions that encapsulate the charm of this season.

December Temperature in Richlands

In December in Richlands, the average temperature is 10°C (50°F). Maximums can reach 25°C (78°F), while minimums can be as low as -6°C (22°F). This diverse range of temperatures makes Richlands a great destination for travelers looking to experience varying climates and activities.

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

The chart illustrates December temperature patterns in Richlands, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Richlands, December typically has an average temperature of 10°C (50°F), with highs reaching up to 25°C (78°F) and lows dropping to around -6°C (22°F).

Data source: Temperature data for Richlands generated using information from the Copernicus Climate Change Service.

December Precipitation in Richlands

In Richlands in December, the total precipitation amount is 116 mm (4.6 in) over a span of 10 days.

December Precipitation Trends in Richlands

The chart displays monthly precipitation patterns in Richlands, 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 Richlands, December typically receives around 116 mm (4.6 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Richlands

In Richlands in December humidity is 86%. With an average temperature of 10°C (50°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities uncomfortable and sticky, which can dampen the spirit of travel.

December Average Humidity in Richlands

This chart illustrates the average monthly humidity levels in Richlands, 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 Richlands is approximately 86%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Richlands

In Richlands 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 Richlands for better planning.

Maximum UV Index Levels in Richlands for December

The chart shows the monthly maximum UV Index (UVI) for Richlands 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 Richlands typically reaches 4, which falls under the moderate exposure category.

Data source: Richlands 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 Richlands Compares to Other Months

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

This table compares monthly weather conditions in Richlands, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (46°F)	79 mm (3.1 inches)	85%	moderate
February Weather	11°C (52°F)	93 mm (3.7 inches)	82%	high
March Weather	12°C (55°F)	68 mm (2.7 inches)	81%	very high
April Weather	17°C (63°F)	110 mm (4.3 inches)	80%	very high
May Weather	22°C (71°F)	125 mm (4.9 inches)	81%	extreme
June Weather	25°C (77°F)	166 mm (6.5 inches)	81%	extreme
July Weather	27°C (80°F)	147 mm (5.8 inches)	81%	extreme
August Weather	26°C (79°F)	190 mm (7.5 inches)	80%	very high
September Weather	24°C (75°F)	196 mm (7.7 inches)	79%	very high
October Weather	20°C (67°F)	69 mm (2.7 inches)	80%	very high
November Weather	12°C (54°F)	101 mm (4.0 inches)	85%	moderate
December Weather	10°C (50°F)	116 mm (4.6 inches)	86%	moderate