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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 19°C (66°F), creating a pleasant climate for exploration. However, be prepared for temperature variations, as it can dip to a chilly 1°C (33°F) or rise to a warm 32°C (90°F). With an average precipitation of 115 mm (4.5 in) spread over 8 days, occasional showers are to be expected. The air carries a typical humidity of 76%, adding to the overall atmospheric richness.

April Temperature in Richland

In April in Richland, the average temperature is 19°C (66°F). Maximum temperatures can reach 32°C (90°F), while the minimum can drop to as low as 1°C (33°F). Be prepared for a range of weather conditions when traveling to Richland during this time.

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 19°C (66°F), with highs reaching up to 32°C (90°F) and lows dropping to around 1°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec505661667479818178705752
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 115 mm (4.5 in) over the course of 8 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 115 mm (4.5 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec9911492115939410911810211559130
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 76%. With an average temperature of 19°C (66°F), this humidity feels like a warm, thick blanket wrapping around you, making travel mildly uncomfortable and encouraging frequent breaks in shaded or air-conditioned areas.

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 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%82%80%76%73%74%80%79%83%77%84%88%
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.
JanFebMarAprMayJunJulAugSepOctNovDec479101111111110864
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 Weather10°C (50°F)99 mm (3.9 inches)85%moderate
February Weather13°C (57°F)114 mm (4.5 inches)82%high
March Weather16°C (61°F)92 mm (3.6 inches)80%very high
April Weather19°C (66°F)115 mm (4.5 inches)76%very high
May Weather23°C (75°F)93 mm (3.7 inches)73%extreme
June Weather26°C (79°F)94 mm (3.7 inches)74%extreme
July Weather27°C (82°F)109 mm (4.3 inches)80%extreme
August Weather27°C (81°F)118 mm (4.6 inches)79%extreme
September Weather26°C (79°F)102 mm (4.0 inches)83%very high
October Weather21°C (71°F)114 mm (4.5 inches)77%very high
November Weather14°C (57°F)59 mm (2.3 inches)84%high
December Weather11°C (53°F)130 mm (5.1 inches)88%moderate

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