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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 is a comfortable 15°C (59°F). However, don’t be surprised by the variations; temperatures can dip as low as -6°C (21°F) or soar to a warm 30°C (85°F). Expect 132 mm (5.2 in) of precipitation spread over approximately 12 days, with an average humidity level of 78%. Embrace the diversity of weather that this month brings!

March Temperature in Mount Vernon

In March in Mount Vernon, the average temperature is 15°C (59°F), with maximums reaching up to 30°C (85°F) and minimums dipping as low as -6°C (21°F). This varied climate makes Mount Vernon an ideal destination for those who enjoy both warm days and cooler nights, perfect for exploring and experiencing the local culture.

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 15°C (59°F), with highs reaching up to 30°C (85°F) and lows dropping to around -6°C (21°F).
JanFebMarAprMayJunJulAugSepOctNovDec464959647380838378675551
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 132 mm (5.2 in) over the course of 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 132 mm (5.2 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec9514213220217310172788013764106
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 78%. With an average temperature of 15°C (59°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making outdoor activities a bit more tiring and requiring frequent breaks for hydration as you explore the area.

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 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%79%78%78%81%78%73%66%65%72%82%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 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 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 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111110864
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 Weather8°C (46°F)95 mm (3.8 inches)80%moderate
February Weather9°C (49°F)142 mm (5.6 inches)79%high
March Weather15°C (59°F)132 mm (5.2 inches)78%very high
April Weather18°C (64°F)202 mm (7.9 inches)78%very high
May Weather23°C (73°F)173 mm (6.8 inches)81%extreme
June Weather27°C (80°F)101 mm (4.0 inches)78%extreme
July Weather29°C (84°F)72 mm (2.8 inches)73%extreme
August Weather28°C (84°F)78 mm (3.1 inches)66%extreme
September Weather26°C (79°F)80 mm (3.2 inches)65%very high
October Weather19°C (67°F)137 mm (5.4 inches)72%very high
November Weather13°C (55°F)63 mm (2.5 inches)82%high
December Weather10°C (51°F)105 mm (4.2 inches)87%moderate

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