April Weather in Richland, United States

Last updated: June 24, 2025

In April, the average temperature in Richland, United States hovers around 10°C (50°F), but expect some variability with minimums dipping to -10°C (15°F) and maximums soaring to 29°C (85°F). Rainy days contribute 81 mm (3.2 in) of precipitation over 11 days, adding to the 82% humidity that characterizes this season. Stay prepared for a mix of weather conditions!

April Temperature in Richland

In April in Richland, the average temperature is 10°C (50°F), with maximums reaching 29°C (85°F) and minimums dropping as low as -10°C (15°F). This range makes it essential for travelers to pack for both warm and cold conditions.

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

The chart illustrates April 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, April typically has an average temperature of 10°C (50°F), with highs reaching up to 29°C (85°F) and lows dropping to around -10°C (15°F).

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

April Precipitation in Richland

In Richland in April, the precipitation amount is 81 mm (3.2 in) over a span of 11 days.

April Precipitation Trends in Richland

The chart displays monthly precipitation patterns in Richland, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Richland, April typically receives around 81 mm (3.2 inches) of precipitation spread over approximately 11 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

April Humidity in Richland

In Richland in April, humidity is 82%. With an average temperature of 10°C (50°F), this humidity feels like a dense, heavy blanket wrapping around you, making every step feel sluggish and the air thick, which can make traveling quite uncomfortable.

April Average Humidity in Richland

This chart illustrates the average monthly humidity levels in Richland, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Richland is approximately 82%, offering insight into how humid the weather typically is during this month.

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

April UV Index in Richland

In Richland in April, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Richland.

Maximum UV Index Levels in Richland for April

The chart shows the monthly maximum UV Index (UVI) for Richland in April, 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 April, the maximum UV index in Richland typically reaches 8, which falls under the very high exposure category.

Data source: Richland April 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 April 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 April’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 April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (24°F)	50 mm (2.0 inches)	81%	moderate
February Weather	-4°C (26°F)	56 mm (2.2 inches)	81%	moderate
March Weather	5°C (41°F)	87 mm (3.4 inches)	81%	high
April Weather	10°C (50°F)	81 mm (3.2 inches)	82%	very high
May Weather	17°C (63°F)	151 mm (5.9 inches)	78%	very high
June Weather	24°C (75°F)	137 mm (5.4 inches)	81%	extreme
July Weather	25°C (77°F)	70 mm (2.8 inches)	79%	very high
August Weather	23°C (74°F)	70 mm (2.8 inches)	77%	very high
September Weather	20°C (69°F)	121 mm (4.8 inches)	78%	very high
October Weather	12°C (54°F)	126 mm (5.0 inches)	78%	high
November Weather	4°C (39°F)	52 mm (2.1 inches)	87%	moderate
December Weather	0°C (32°F)	45 mm (1.8 inches)	84%	moderate