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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 22°C (72°F), providing a pleasant climate for outdoor activities. Expect a minimum drop to 4°C (39°F) and potential peaks of 36°C (98°F). With an average humidity of 76%, it’s ideal to stay hydrated, especially during those warmer days. However, be prepared for occasional showers, as 119 mm (4.7 in) of precipitation is likely over 9 days.

October Temperature in Mount Vernon

In October in Mount Vernon, the average temperature is 22°C (72°F). Maximum temperatures can reach 36°C (98°F), while minimums can dip to as low as 4°C (39°F). Be prepared for a wide range of temperatures during your travels!

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 22°C (72°F), with highs reaching up to 36°C (98°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec525863677580828179725955
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 119 mm (4.7 in) occurring over a span 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 119 mm (4.7 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec1029810812014121014916013211965130
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 76%. With an average temperature of 22°C (72°F), this humidity feels like a warm embrace, making travel slightly uncomfortable as you navigate through the thick, saturated 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 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%78%73%71%79%78%80%76%83%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 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 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 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589111111111110864
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 Weather11°C (52°F)102 mm (4.0 inches)82%moderate
February Weather14°C (58°F)98 mm (3.9 inches)80%very high
March Weather17°C (63°F)108 mm (4.2 inches)80%very high
April Weather20°C (67°F)120 mm (4.7 inches)78%extreme
May Weather24°C (76°F)141 mm (5.6 inches)73%extreme
June Weather27°C (80°F)210 mm (8.3 inches)71%extreme
July Weather28°C (82°F)149 mm (5.9 inches)79%extreme
August Weather27°C (82°F)160 mm (6.3 inches)78%extreme
September Weather26°C (79°F)132 mm (5.2 inches)80%very high
October Weather22°C (72°F)119 mm (4.7 inches)76%very high
November Weather15°C (59°F)65 mm (2.6 inches)83%high
December Weather13°C (55°F)130 mm (5.1 inches)87%moderate

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