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April Weather in Rio Dell, United States

Last updated: June 24, 2025

In April, the average temperature in Rio Dell, United States hovers around 10°C (49°F). Daily temperatures can vary, with a minimum of -1°C (31°F) and a maximum reaching up to 25°C (76°F). Prepare for a bit of rain, as the area sees about 101 mm (4.0 in) of precipitation over 10 days, contributing to an average humidity of 82%.

April Temperature in Rio Dell

In April in Rio Dell, the average temperature is 10°C (49°F). Maximums can reach 25°C (76°F), while minimums can drop to as low as -1°C (31°F). Be prepared for a wide range of temperatures when traveling to Rio Dell during this time.

April Weather in Rio Dell: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Rio Dell, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio Dell, April typically has an average temperature of 10°C (49°F), with highs reaching up to 25°C (76°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec454446495358626461554844
Data source: Temperature data for Rio Dell 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 Rio Dell

In Rio Dell in April, the precipitation amount is 101 mm (4.0 in) spread over the course of 10 days.

April Precipitation Trends in Rio Dell

The chart displays monthly precipitation patterns in Rio Dell, 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 Rio Dell, April typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec2152011771016516212359129155
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Rio Dell

In Rio Dell in April, humidity is 82%. With an average temperature of 10°C (49°F), this humidity feels like a damp chill that clings to your skin, making every step heavy and every breath feel cooler than the air itself, which can dampen the thrill of exploring but also lends a unique atmosphere to your travels.

April Average Humidity in Rio Dell

This chart illustrates the average monthly humidity levels in Rio Dell, 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 Rio Dell is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%85%82%81%79%70%60%62%72%87%86%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Rio Dell

In Rio Dell 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 Rio Dell.

Maximum UV Index Levels in Rio Dell for April

The chart shows the monthly maximum UV Index (UVI) for Rio Dell 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 Rio Dell typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3478101110108642
Data source: Rio Dell 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 Rio Dell Compares to Other Months

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

This table compares monthly weather conditions in Rio Dell, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)214 mm (8.4 inches)86%moderate
February Weather7°C (44°F)201 mm (7.9 inches)85%moderate
March Weather8°C (46°F)177 mm (7.0 inches)85%high
April Weather10°C (49°F)101 mm (4.0 inches)82%very high
May Weather12°C (53°F)65 mm (2.6 inches)81%very high
June Weather15°C (59°F)16 mm (0.6 inches)79%extreme
July Weather17°C (62°F)2 mm (0.1 inches)70%very high
August Weather18°C (64°F)1 mm (0.0 inches)60%very high
September Weather16°C (61°F)23 mm (0.9 inches)62%very high
October Weather13°C (55°F)59 mm (2.3 inches)72%high
November Weather9°C (49°F)128 mm (5.1 inches)87%moderate
December Weather6°C (44°F)155 mm (6.1 inches)86%low

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