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April Weather in Richland, United States

Last updated: June 24, 2025

In April, the average temperature in Richland, United States hovers around 13°C (55°F). Expect temperature extremes ranging from a brisk -5°C (23°F) to a scorching 31°C (89°F). The month brings an average precipitation of 148 mm (5.8 in) spread over 13 days, contributing to a notable average humidity of 78%.

April Temperature in Richland

In April in Richland, the average temperature is 13°C (55°F), with maximums that can reach 31°C (89°F) and minimums that can drop as low as -5°C (23°F). Be sure to pack layers to prepare for the wide range of temperatures you'll experience during your travels.

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 13°C (55°F), with highs reaching up to 31°C (89°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec343748556675797672594641
Data source: Temperature data for Richland 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.

April Precipitation in Richland

In Richland in April, the precipitation amount is 148 mm (5.8 in) occurring over the course of 13 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 148 mm (5.8 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec7981130148165959891511346452
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Richland

In Richland in April, humidity is 78%. With an average temperature of 13°C (55°F), this humidity feels like a damp blanket enveloping you, making outdoor activities feel steamy and your clothes cling uncomfortably, often leaving you longing for a cool breeze or an air-conditioned escape while exploring.

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 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%78%76%78%83%83%78%68%64%70%83%87%
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 reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
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.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)79 mm (3.1 inches)81%moderate
February Weather3°C (37°F)80 mm (3.2 inches)78%high
March Weather9°C (49°F)130 mm (5.1 inches)76%high
April Weather13°C (55°F)148 mm (5.8 inches)78%very high
May Weather19°C (66°F)165 mm (6.5 inches)83%very high
June Weather24°C (76°F)95 mm (3.7 inches)83%extreme
July Weather26°C (79°F)98 mm (3.9 inches)78%extreme
August Weather25°C (76°F)91 mm (3.6 inches)68%very high
September Weather22°C (73°F)51 mm (2.0 inches)64%very high
October Weather15°C (59°F)134 mm (5.3 inches)70%high
November Weather8°C (46°F)64 mm (2.5 inches)83%moderate
December Weather5°C (41°F)52 mm (2.1 inches)87%moderate

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