January Weather in Richland, United States

Last updated: June 24, 2025

In January, the average temperature in Richland, United States hovers around 10°C (50°F). Temperatures can range from a chilly -8°C (19°F) at their lowest to a warm 27°C (82°F) at their peak. Expect a fair amount of rain, with 99 mm (3.9 in) of precipitation spread over 9 days. The air is quite humid, with an average humidity level of 85%.

January Temperature in Richland

In January in Richland, the average temperature is 10°C (50°F). The maximum can reach 27°C (82°F) and the minimum can be as low as -8°C (19°F). Be prepared for a wide range of temperatures when traveling during this time.

January Weather in Richland: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Richland, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Richland, January typically has an average temperature of 10°C (50°F), with highs reaching up to 27°C (82°F) and lows dropping to around -8°C (19°F).

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

January Precipitation in Richland

In Richland in January, the precipitation amount is 99 mm (3.9 in) during a span of 9 days.

January Precipitation Trends in Richland

The chart displays monthly precipitation patterns in Richland, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Richland, January typically receives around 99 mm (3.9 inches) of precipitation spread over approximately 9 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Richland

In Richland in January, humidity is 85%. With an average temperature of 10°C (50°F), this humidity feels like a heavy, damp blanket surrounding you, making travel feel sluggish and uncomfortable as you navigate through the thick, moist air.

January Average Humidity in Richland

This chart illustrates the average monthly humidity levels in Richland, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Richland is approximately 85%, offering insight into how humid the weather typically is during this month.

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

January UV Index in Richland

In Richland in January, 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 Richland for better planning.

Maximum UV Index Levels in Richland for January

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

Data source: Richland January 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 January Weather in Richland Compares to Other Months

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

This table compares monthly weather conditions in Richland, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (50°F)	99 mm (3.9 inches)	85%	moderate
February Weather	13°C (57°F)	114 mm (4.5 inches)	82%	high
March Weather	16°C (61°F)	92 mm (3.6 inches)	80%	very high
April Weather	19°C (66°F)	115 mm (4.5 inches)	76%	very high
May Weather	23°C (75°F)	93 mm (3.7 inches)	73%	extreme
June Weather	26°C (79°F)	94 mm (3.7 inches)	74%	extreme
July Weather	27°C (82°F)	109 mm (4.3 inches)	80%	extreme
August Weather	27°C (81°F)	118 mm (4.6 inches)	79%	extreme
September Weather	26°C (79°F)	102 mm (4.0 inches)	83%	very high
October Weather	21°C (71°F)	114 mm (4.5 inches)	77%	very high
November Weather	14°C (57°F)	59 mm (2.3 inches)	84%	high
December Weather	11°C (53°F)	130 mm (5.1 inches)	88%	moderate