October weather forecast
Vernon Hills, IL

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Weather in October

October, like September, is another refreshing autumn month in Vernon Hills, Illinois, with an average temperature varying between 45.5°F (7.5°C) and 59.2°F (15.1°C).

Temperature

As October commences, the average high-temperature shows a reduction, transitioning from an agreeable 72.9°F (22.7°C) in September to a refreshing 59.2°F (15.1°C). Vernon Hills, during the month of October, experiences an average low-temperature of 45.5°F (7.5°C).

Humidity

October is the least humid month, with an average relative humidity of 74%.

Rainfall

In October, in Vernon Hills, the rain falls for 13.5 days. Throughout October, 2.36" (60mm) of precipitation is accumulated. Throughout the year, there are 147.3 rainfall days, and 27.44" (697mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. October is the first month it typically snows. Throughout October, in the average 0.6 snowfall days, it receives 0.31" (8mm) of snow. Throughout the year, in Vernon Hills, there are 48.2 snowfall days, and 18.86" (479mm) of snow is accumulated.

Daylight

The average length of the day in October is 11h and 3min.
On the first day of the month, sunrise is at 6:49 am and sunset at 6:32 pm. On the last day of October, sunrise is at 7:24 am and sunset at 5:46 pm CDT.

Sunshine

The average sunshine in October is 5.5h.

UV index

The average daily maximum UV index in October is 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: A typical high UV index of 2 in October suggests the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Updated: Jul 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in October?

The average high-temperature, in October, in Vernon Hills, is 59.2°F (15.1°C), while the average low-temperature is 45.5°F (7.5°C).

What is the least humid month?

October is the least humid month, with an average relative humidity of 74%.

What is the average humidity in October?

The average relative humidity in October is 74%.

How many days does it rain in October?

In Vernon Hills, in October, it is raining for 13.5 days, with typically 2.36" (60mm) of accumulated precipitation.

When does it start to snow?

October is the first month it typically snows. Throughout October, in the average 0.6 snowfall days, it receives 0.31" (8mm) of snow.

How many hours of daylight does Vernon Hills have in October?

In October, the average day length in Vernon Hills is 11h and 3min.

When are sunrise and sunset in October in Vernon Hills?

On the first day of October, sunrise is at 6:49 am and sunset at 6:32 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:46 pm CDT.

How many hours of sunshine does Vernon Hills have in October?

In October, the average sunshine duration is 5.5h.

What is the UV index reading in October?

The average daily maximum UV index in October is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Vernon Hills, IL

Average temperature in October - Vernon Hills, IL
  • Average high temperature in October: 59.2°F

The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (27.9°F).

  • Average low temperature in October: 45.5°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).

Average pressure in October
Vernon Hills, IL

Average pressure in October - Vernon Hills, IL
  • Average pressure in October: 30"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in October
Vernon Hills, IL

Average wind speed in October - Vernon Hills, IL
  • Average wind speed in October: 9mph

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

Average humidity in October
Vernon Hills, IL

Average humidity in October - Vernon Hills, IL
  • Average humidity in October: 74%

The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).

Average rainfall in October
Vernon Hills, IL

Average rainfall in October - Vernon Hills, IL
  • Average rainfall in October: 2.36"

The wettest month (with the highest rainfall) is June (3.54").
The driest months (with the least rainfall) are November and December (1.3").

Average rainfall days in October
Vernon Hills, IL

Average rainfall days in October - Vernon Hills, IL
  • Average rainfall days in October: 13.5 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (4.3 days).

Average snowfall in October
Vernon Hills, IL

Average snowfall in October - Vernon Hills, IL
  • Average snowfall in October: 0.31"

The month with the highest snowfall is February (5.55").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in October
Vernon Hills, IL

Average snowfall days in October - Vernon Hills, IL
  • Average snowfall days in October: 0.6 days

The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in October /
Average sunshine in October
Vernon Hills, IL

Average daylight in October / Average sunshine in October - Vernon Hills, IL
  • Average daylight in October: 11h and 1min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in October: 5h and 3min

The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in October
Vernon Hills, IL

Average sunshine days in October - Vernon Hills, IL
  • Average sunshine days in October: 14.4 days

The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is June (10 days).

Average UV index in October
Vernon Hills, IL

Average UV index in October - Vernon Hills, IL
  • Average UV index in October: 2

The months with the highest UV index are July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in October
Vernon Hills, IL

Average cloud cover in October - Vernon Hills, IL
  • Average cloud cover in October: 44

The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 30).

Average visibility in October
Vernon Hills, IL

Average visibility in October - Vernon Hills, IL
  • Average visibility in October: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).

Vernon Hills, Illinois, USA

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