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April Weather in Prosser, United States

Last updated: June 24, 2025

In Prosser, United States, the average temperature in April hovers around 13°C (55°F). Temperatures can fluctuate significantly, with a minimum plunging to -2°C (29°F) and a possible maximum soaring to 32°C (91°F). Expect some precipitation, with an average of 22 mm (0.9 in) spread over 5 days, and enjoy the moderate conditions accompanied by an average humidity of 82%.

April Temperature in Prosser

In April in Prosser, the average temperature is 13°C (55°F). Maximum temperatures can reach 32°C (91°F), while minimums can drop as low as -2°C (29°F). Be prepared for a wide range of temperatures while traveling to Prosser in April.

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

The chart illustrates April temperature patterns in Prosser, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Prosser, April typically has an average temperature of 13°C (55°F), with highs reaching up to 32°C (91°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec343646556674818069534235
Data source: Temperature data for Prosser 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 Prosser

In Prosser in April, the total precipitation amount is 22 mm (0.9 in) spread over a period of 5 days.

April Precipitation Trends in Prosser

The chart displays monthly precipitation patterns in Prosser, 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 Prosser, April typically receives around 22 mm (0.9 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec39392422156149243131
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Prosser

In Prosser in April, humidity is 82%. With an average temperature of 13°C (55°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities sticky and uncomfortable for traveling.

April Average Humidity in Prosser

This chart illustrates the average monthly humidity levels in Prosser, 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 Prosser is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%86%86%82%77%79%77%62%60%80%87%86%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Prosser

In Prosser in April, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Prosser, you can refer to this Hourly UV Index in Prosser.

Maximum UV Index Levels in Prosser for April

The chart shows the monthly maximum UV Index (UVI) for Prosser 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 Prosser typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2356991097532
Data source: Prosser 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 Prosser Compares to Other Months

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

This table compares monthly weather conditions in Prosser, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)39 mm (1.5 inches)85%low
February Weather2°C (36°F)39 mm (1.5 inches)86%moderate
March Weather8°C (46°F)24 mm (0.9 inches)86%moderate
April Weather13°C (55°F)22 mm (0.9 inches)82%high
May Weather19°C (66°F)15 mm (0.6 inches)77%very high
June Weather23°C (74°F)6 mm (0.2 inches)79%very high
July Weather27°C (81°F)1 mm (0.0 inches)77%very high
August Weather27°C (80°F)4 mm (0.1 inches)62%very high
September Weather20°C (69°F)9 mm (0.3 inches)60%high
October Weather12°C (53°F)24 mm (1.0 inches)80%moderate
November Weather5°C (42°F)31 mm (1.2 inches)87%moderate
December Weather2°C (35°F)31 mm (1.2 inches)86%low

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