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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 19°C (67°F), with a minimum dipping to 0°C (32°F) and a maximum soaring to 35°C (96°F). Expect 137 mm (5.4 in) of precipitation across about 9 days, contributing to a relatively high average humidity of 72%. Get ready for a diverse climate experience!

October Temperature in Mount Vernon

In October in Mount Vernon, the average temperature is 19°C (67°F), with maximums reaching up to 35°C (96°F) and minimums dipping as low as 0°C (32°F). Travelers should be prepared 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 19°C (67°F), with highs reaching up to 35°C (96°F) and lows dropping to around 0°C (32°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.

October Precipitation in Mount Vernon

In Mount Vernon in October, the total precipitation amount is 137 mm (5.4 in) over the course 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 137 mm (5.4 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec9514213220217310172788013764106
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 72%. With an average temperature of 19°C (67°F), this humidity feels like a warm, damp blanket enveloping you, making outdoor activities a bit more challenging but also giving the air a refreshing quality that's invigorating for short excursions.

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 72%, 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 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.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111110864
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 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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