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March Weather in Mount Vernon, United States

Last updated: June 24, 2025

In March, the average temperature in Mount Vernon, United States hovers around 10°C (50°F). Weather can be quite varied, with minimum temperatures dipping to -15°C (5°F) and maxing out at a warm 29°C (85°F). With an average humidity of 76%, you can expect a rather muggy feel during the month. Additionally, 146 mm (5.8 in) of precipitation typically falls over about 12 days, so be prepared for some rainy spells!

March Temperature in Mount Vernon

In March in Mount Vernon, the average temperature is 10°C (50°F), with maximums reaching 29°C (85°F) and minimums dropping as low as -15°C (5°F). Be prepared for a wide range of temperatures if you're traveling during this time!

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

The chart illustrates March 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, March typically has an average temperature of 10°C (50°F), with highs reaching up to 29°C (85°F) and lows dropping to around -15°C (5°F).
JanFebMarAprMayJunJulAugSepOctNovDec363849556676797673594641
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.

March Precipitation in Mount Vernon

In Mount Vernon in March, the precipitation amount is 146 mm (5.8 in) spread over 12 days.

March Precipitation Trends in Mount Vernon

The chart displays monthly precipitation patterns in Mount Vernon, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Mount Vernon, March typically receives around 146 mm (5.8 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec85871461581678785128581526753
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Mount Vernon

In Mount Vernon in March, humidity is 76%. With an average temperature of 10°C (50°F), this humidity feels like a damp chill that seeps through your clothes, making outdoor activities quite uncomfortable and necessitating a layer of warmth for traveling.

March Average Humidity in Mount Vernon

This chart illustrates the average monthly humidity levels in Mount Vernon, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Mount Vernon is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%78%76%78%83%83%78%68%64%70%83%87%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Mount Vernon

In Mount Vernon in March, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Mount Vernon.

Maximum UV Index Levels in Mount Vernon for March

The chart shows the monthly maximum UV Index (UVI) for Mount Vernon in March, 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 March, the maximum UV index in Mount Vernon typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
Data source: Mount Vernon March 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 March 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 March’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 March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)85 mm (3.3 inches)81%moderate
February Weather3°C (38°F)87 mm (3.4 inches)78%high
March Weather10°C (50°F)146 mm (5.8 inches)76%high
April Weather13°C (56°F)158 mm (6.2 inches)78%very high
May Weather19°C (66°F)167 mm (6.6 inches)83%very high
June Weather24°C (76°F)87 mm (3.4 inches)83%extreme
July Weather26°C (79°F)85 mm (3.4 inches)78%extreme
August Weather25°C (77°F)128 mm (5.0 inches)68%very high
September Weather23°C (73°F)58 mm (2.3 inches)64%very high
October Weather15°C (59°F)152 mm (6.0 inches)70%high
November Weather8°C (47°F)67 mm (2.6 inches)83%moderate
December Weather5°C (42°F)53 mm (2.1 inches)87%moderate

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