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April Weather in Mount Vernon, United States

Last updated: June 24, 2025

In Mount Vernon, United States, the average temperature in April hovers around 20°C (68°F). However, temperatures can range widely, dipping as low as 1°C (33°F) and peaking at a sweltering 37°C (99°F). Expect 82 mm (3.2 in) of precipitation over 8 days, accompanied by a high average humidity of 81%.

April Temperature in Mount Vernon

In April in Mount Vernon, the average temperature is 20°C (68°F). Maximum temperatures can reach 37°C (99°F), while minimums can drop as low as 1°C (33°F). Be prepared for a wide range of temperatures during your travels, as the weather can vary significantly.

April Weather in Mount Vernon: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Mount Vernon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mount Vernon, April typically has an average temperature of 20°C (68°F), with highs reaching up to 37°C (99°F) and lows dropping to around 1°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec515761677580838279725853
Data source: Temperature data for Mount Vernon 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 Mount Vernon

In Mount Vernon in April, the total precipitation amount reached 82 mm (3.2 in) over the course of 8 days.

April Precipitation Trends in Mount Vernon

The chart displays monthly precipitation patterns in Mount Vernon, 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 Mount Vernon, April typically receives around 82 mm (3.2 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec83101748284108126119998456124
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Mount Vernon

In Mount Vernon in April humidity is 81%. With an average temperature of 20°C (68°F), this humidity feels like a warm embrace that can make outdoor activities feel steamy and exhausting, potentially leading travelers to seek shade or a refreshing drink more often.

April Average Humidity in Mount Vernon

This chart illustrates the average monthly humidity levels in Mount Vernon, 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 Mount Vernon is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%83%81%81%81%83%81%82%78%86%89%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Mount Vernon

In Mount Vernon 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 Mount Vernon.

Maximum UV Index Levels in Mount Vernon for April

The chart shows the monthly maximum UV Index (UVI) for Mount Vernon 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 Mount Vernon typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec479101111111110864
Data source: Mount Vernon 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 Mount Vernon Compares to Other Months

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

This table compares monthly weather conditions in Mount Vernon, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (52°F)83 mm (3.2 inches)86%moderate
February Weather14°C (57°F)101 mm (4.0 inches)84%high
March Weather16°C (62°F)74 mm (2.9 inches)83%very high
April Weather20°C (68°F)82 mm (3.2 inches)81%very high
May Weather24°C (76°F)84 mm (3.3 inches)81%extreme
June Weather27°C (80°F)108 mm (4.3 inches)81%extreme
July Weather28°C (83°F)126 mm (5.0 inches)83%extreme
August Weather28°C (82°F)119 mm (4.7 inches)81%extreme
September Weather26°C (80°F)99 mm (3.9 inches)82%very high
October Weather22°C (72°F)83 mm (3.3 inches)78%very high
November Weather14°C (58°F)56 mm (2.2 inches)86%high
December Weather12°C (54°F)124 mm (4.9 inches)89%moderate

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