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April Weather in Walnut, United States

Last updated: June 24, 2025

In April, the average temperature in Walnut, United States hovers around 10°C (49°F). Expect a temperature range that can dip as low as -8°C (17°F) or soar up to 29°C (84°F). During this month, precipitation totals 114 mm (4.5 in) spread across 11 days, while the average humidity remains high at 85%.

April Temperature in Walnut

In April in Walnut, the average temperature is 10°C (49°F). Maximums can reach 29°C (84°F), while minimums can drop as low as -8°C (17°F). This wide temperature range means travelers should be prepared for both warm and cold conditions when visiting.

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

The chart illustrates April temperature patterns in Walnut, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Walnut, April typically has an average temperature of 10°C (49°F), with highs reaching up to 29°C (84°F) and lows dropping to around -8°C (17°F).
JanFebMarAprMayJunJulAugSepOctNovDec242740496273767368543932
Data source: Temperature data for Walnut 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 Walnut

In Walnut in April, the total precipitation amount is 114 mm (4.5 in) spread over 11 days.

April Precipitation Trends in Walnut

The chart displays monthly precipitation patterns in Walnut, 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 Walnut, April typically receives around 114 mm (4.5 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec586294114173146100681101275549
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Walnut

In Walnut in April humidity is 85%. With an average temperature of 10°C (49°F), this humidity feels like an unrelenting blanket, making outdoor activities less enjoyable and forcing travelers to seek shelter more often.

April Average Humidity in Walnut

This chart illustrates the average monthly humidity levels in Walnut, 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 Walnut is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%83%84%85%79%82%80%81%80%82%88%84%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Walnut

In Walnut 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 Walnut.

Maximum UV Index Levels in Walnut for April

The chart shows the monthly maximum UV Index (UVI) for Walnut 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 Walnut typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35689101098642
Data source: Walnut 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 Walnut Compares to Other Months

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

This table compares monthly weather conditions in Walnut, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)58 mm (2.3 inches)82%moderate
February Weather-3°C (27°F)62 mm (2.5 inches)83%moderate
March Weather4°C (40°F)94 mm (3.7 inches)84%high
April Weather10°C (49°F)114 mm (4.5 inches)85%very high
May Weather17°C (62°F)173 mm (6.8 inches)79%very high
June Weather23°C (73°F)146 mm (5.7 inches)82%very high
July Weather24°C (76°F)100 mm (3.9 inches)80%very high
August Weather23°C (74°F)68 mm (2.7 inches)81%very high
September Weather20°C (69°F)110 mm (4.3 inches)80%very high
October Weather12°C (55°F)127 mm (5.0 inches)82%high
November Weather4°C (39°F)55 mm (2.2 inches)88%moderate
December Weather0°C (33°F)49 mm (1.9 inches)84%low

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