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April Weather in Richland, United States

Last updated: June 24, 2025

In Richland, United States, the average temperature in April hovers around 7°C (45°F). However, it can vary dramatically, with temperatures dropping as low as -5°C (23°F) and peaking at 26°C (80°F). This month brings approximately 141 mm (5.6 in) of precipitation over 14 days, contributing to an average humidity level of 88%. Stay prepared for a mix of chilly and mild days!

April Temperature in Richland

In April in Richland, the average temperature is 7°C (45°F), with maximums reaching up to 26°C (80°F) and minimums dropping as low as -5°C (23°F). Be prepared for a wide range of temperatures to ensure a comfortable visit while exploring Richland.

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 7°C (45°F), with highs reaching up to 26°C (80°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec232632445766717063523829
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 total precipitation amount is 141 mm (5.6 in) over a span of 14 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 141 mm (5.6 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec11612010614113411218412398190139142
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 88%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable as you navigate through a heavy, thick atmosphere that clings to your skin.

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 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%87%88%82%79%78%76%78%84%89%86%
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.
JanFebMarAprMayJunJulAugSepOctNovDec3468910997532
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 Weather-5°C (24°F)116 mm (4.6 inches)90%moderate
February Weather-3°C (26°F)119 mm (4.7 inches)90%moderate
March Weather0°C (33°F)106 mm (4.2 inches)87%high
April Weather7°C (45°F)141 mm (5.6 inches)88%very high
May Weather14°C (57°F)134 mm (5.3 inches)82%very high
June Weather19°C (66°F)112 mm (4.4 inches)79%very high
July Weather22°C (72°F)184 mm (7.2 inches)78%very high
August Weather21°C (70°F)123 mm (4.8 inches)76%very high
September Weather17°C (63°F)98 mm (3.9 inches)78%high
October Weather11°C (53°F)190 mm (7.5 inches)84%moderate
November Weather3°C (38°F)139 mm (5.5 inches)89%moderate
December Weather-1°C (30°F)142 mm (5.6 inches)86%low

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