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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 14°C (57°F), but expect a range from a chilly -3°C (27°F) to a warm 31°C (88°F). The month brings about 135 mm (5.3 in) of precipitation over 13 days, contributing to an average humidity of 84%. Prepare for a mix of weather as you explore this vibrant locale!

April Temperature in Mount Vernon

In April in Mount Vernon, the average temperature is 14°C (57°F), with maximums reaching 31°C (88°F) and minimums dropping as low as -3°C (27°F). It's advisable to pack for a range of weather conditions to fully enjoy your travels.

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 14°C (57°F), with highs reaching up to 31°C (88°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec374349576773787671614642
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 precipitation amount is 135 mm (5.3 in) over the course of 13 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 135 mm (5.3 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec9918213913512814910511712111880139
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 84%. With an average temperature of 14°C (57°F), this humidity feels like a thick blanket wrapping around you, making outdoor activities feel stifling and requiring frequent breaks to cool off.

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 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%87%84%84%83%79%66%67%76%89%88%
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 is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For 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 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3679111111109753
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 Weather3°C (38°F)99 mm (3.9 inches)88%moderate
February Weather6°C (43°F)182 mm (7.2 inches)88%high
March Weather10°C (49°F)139 mm (5.5 inches)87%high
April Weather14°C (57°F)135 mm (5.3 inches)84%very high
May Weather20°C (68°F)128 mm (5.0 inches)84%extreme
June Weather23°C (73°F)148 mm (5.8 inches)83%extreme
July Weather25°C (78°F)105 mm (4.1 inches)79%extreme
August Weather24°C (76°F)117 mm (4.6 inches)66%very high
September Weather22°C (72°F)121 mm (4.7 inches)67%very high
October Weather16°C (61°F)118 mm (4.6 inches)76%high
November Weather8°C (46°F)80 mm (3.1 inches)89%moderate
December Weather6°C (43°F)139 mm (5.5 inches)88%moderate

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