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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 14°C (57°F). Expect a wide range, with minimums dipping to -2°C (29°F) and maximums soaring to 32°C (90°F). The region sees about 100 mm (4.0 in) of precipitation spread over 12 days, contributing to an average humidity of 82%. Embrace the variety this month brings as you experience the unique climate of Mount Vernon!

October Temperature in Mount Vernon

In October in Mount Vernon, the average temperature is 14°C (57°F), with maximums reaching 32°C (90°F) and minimums dropping as low as -2°C (29°F). Travelers should be prepared for a wide range of temperatures during this time.

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 14°C (57°F), with highs reaching up to 32°C (90°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec303341516371757268574135
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 100 mm (4.0 in) spread over a period of 12 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 100 mm (4.0 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec8310210813012514011583831009697
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 82%. With an average temperature of 14°C (57°F), this humidity feels like a thick blanket enveloping you, making outdoor activities uncomfortable and travel more challenging due to the heavy, damp air.

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 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%87%88%81%82%81%78%78%82%89%86%
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.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
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-1°C (30°F)83 mm (3.3 inches)88%moderate
February Weather0°C (33°F)102 mm (4.0 inches)87%moderate
March Weather5°C (41°F)108 mm (4.2 inches)87%high
April Weather10°C (51°F)130 mm (5.1 inches)87%very high
May Weather17°C (63°F)124 mm (4.9 inches)81%very high
June Weather22°C (71°F)140 mm (5.5 inches)82%very high
July Weather24°C (75°F)115 mm (4.5 inches)81%very high
August Weather22°C (73°F)83 mm (3.3 inches)78%very high
September Weather20°C (68°F)83 mm (3.3 inches)78%very high
October Weather14°C (57°F)100 mm (4.0 inches)82%high
November Weather5°C (41°F)96 mm (3.8 inches)89%moderate
December Weather2°C (35°F)97 mm (3.8 inches)86%low

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