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October Weather in Mount Vernon, United States

Last updated: June 24, 2025

In October, the average temperature in Mount Vernon, United States hovers around 6°C (44°F). Be prepared for a wide temperature range, as it can dip as low as -13°C (10°F) and soar up to 27°C (81°F). Expect around 56 mm (2.2 in) of precipitation spread over 9 days, and a notable average humidity of 75%. Whether you're bundling up or gearing up for a mild day, the weather in Mount Vernon can be quite the adventure!

October Temperature in Mount Vernon

In October in Mount Vernon, the average temperature is 6°C (44°F). The maximum can reach 27°C (81°F), while the minimum can dip as low as -13°C (10°F). This wide temperature range means travelers should prepare for both warm days and chilly nights.

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

The chart illustrates October 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, October typically has an average temperature of 6°C (44°F), with highs reaching up to 27°C (81°F) and lows dropping to around -13°C (10°F).
JanFebMarAprMayJunJulAugSepOctNovDec272835415058696757443428
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.

October Precipitation in Mount Vernon

In Mount Vernon in October, the precipitation amount is 56 mm (2.2 in) over a period of 9 days.

October Precipitation Trends in Mount Vernon

The chart displays monthly precipitation patterns in Mount Vernon, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Mount Vernon, October typically receives around 56 mm (2.2 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec701017880734131431566267
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Mount Vernon

In Mount Vernon in October humidity is 75%. With an average temperature of 6°C (44°F), this humidity feels like a chilly, damp blanket wrapping around you, making travel less enjoyable as the moisture clings to your skin and seeps into your clothes, leaving you feeling uncomfortable and clammy.

October Average Humidity in Mount Vernon

This chart illustrates the average monthly humidity levels in Mount Vernon, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Mount Vernon is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%85%83%77%81%77%60%58%75%85%87%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Mount Vernon

In Mount Vernon in October, 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 Mount Vernon, you can refer to this Hourly UV Index in Mount Vernon.

Maximum UV Index Levels in Mount Vernon for October

The chart shows the monthly maximum UV Index (UVI) for Mount Vernon in October, 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 October, the maximum UV index in Mount Vernon typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101110108642
Data source: Mount Vernon October 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 October 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 October’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 October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (28°F)70 mm (2.7 inches)86%moderate
February Weather-2°C (29°F)101 mm (4.0 inches)86%moderate
March Weather2°C (35°F)78 mm (3.1 inches)85%high
April Weather5°C (41°F)80 mm (3.1 inches)83%very high
May Weather10°C (50°F)73 mm (2.9 inches)77%very high
June Weather15°C (59°F)41 mm (1.6 inches)81%extreme
July Weather20°C (69°F)3 mm (0.1 inches)76%very high
August Weather20°C (68°F)14 mm (0.6 inches)60%very high
September Weather14°C (58°F)31 mm (1.2 inches)58%very high
October Weather6°C (44°F)56 mm (2.2 inches)75%high
November Weather1°C (35°F)62 mm (2.4 inches)85%moderate
December Weather-2°C (28°F)67 mm (2.6 inches)87%low

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