October weather forecast
Grant Park, IL

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Weather in October

October, like September, in Grant Park, Illinois, is another refreshing autumn month, with an average temperature varying between 61.7°F (16.5°C) and 46.6°F (8.1°C).

Temperature

The average high-temperature drops in October, from September's moderately hot 74.8°F (23.8°C) to a comfortable 61.7°F (16.5°C). Grant Park registers a consistent average low-temperature of 46.6°F (8.1°C) during October.

Humidity

October is the least humid month, with an average relative humidity of 72%.

Rainfall

In Grant Park, during October, the rain falls for 10 days and regularly aggregates up to 1.18" (30mm) of precipitation. Throughout the year, there are 132 rainfall days, and 15.16" (385mm) of precipitation is accumulated.

Snowfall

In Grant Park, snow does not fall in May through October.

Daylight

In Grant Park, the average length of the day in October is 11h and 5min.
On the first day of the month, sunrise is at 6:48 am and sunset at 6:31 pm. On the last day of October, sunrise is at 7:21 am and sunset at 5:46 pm CDT.

Sunshine

In Grant Park, Illinois, the average sunshine in October is 6.1h.

UV index

In October, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In October, an average UV index of 2 transforms into the following instructions:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.

Frequently asked questions

What is the average October temperature?

In October, the average high-temperature and low-temperature are 61.7°F (16.5°C) and 46.6°F (8.1°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in July is computed to be 87.8°F (31°C).

What is the least humid month?

With an average relative humidity of 72%, October is the least humid month.

What is the average humidity in October?

In Grant Park, the average relative humidity in October is 72%.

How much does it rain in October?

In Grant Park, during October, the rain falls for 10 days and regularly aggregates up to 1.18" (30mm) of precipitation.

When it does not snow?

May through October are months without snowfall.

Does it snow in October?

In Grant Park, in October, it doesn't snow. In November, it regularly snows.

What is the average length of the day in October in Grant Park?

The average day length in October is 11h and 5min.

When is the sunrise / sunset in October?

On the first day of October, sunrise is at 6:48 am and sunset at 6:31 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 5:46 pm CDT.

How many hours of sunshine does Grant Park have in October?

In October, the average sunshine duration is 6.1h.

What is the UV index intensity in October?

In October, the average daily maximum UV index in Grant Park is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Grant Park, IL

Average temperature in October - Grant Park, IL
  • Average high temperature in October: 61.7°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30°F).

  • Average low temperature in October: 46.6°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).

Average pressure in October
Grant Park, IL

Average pressure in October - Grant Park, IL
  • Average pressure in October: 30.01"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in October
Grant Park, IL

Average wind speed in October - Grant Park, IL
  • Average wind speed in October: 8.9mph

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).

Average humidity in October
Grant Park, IL

Average humidity in October - Grant Park, IL
  • Average humidity in October: 72%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).

Average rainfall in October
Grant Park, IL

Average rainfall in October - Grant Park, IL
  • Average rainfall in October: 1.18"

The wettest month (with the highest rainfall) is May (2.2").
The driest month (with the least rainfall) is February (0.67").

Average rainfall days in October
Grant Park, IL

Average rainfall days in October - Grant Park, IL
  • Average rainfall days in October: 10 days

The month with the highest number of rainy days is July (15.7 days).
The month with the least rainy days is February (5.1 days).

Average snowfall in October
Grant Park, IL

Average snowfall in October - Grant Park, IL
  • Average snowfall in October: 0"

The month with the highest snowfall is January (1.42").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in October
Grant Park, IL

Average snowfall days in October - Grant Park, IL
  • Average snowfall days in October: 0.2 days

The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in October /
Average sunshine in October
Grant Park, IL

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

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in October: 6h and 1min

The months with the most sunshine are June, July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in October
Grant Park, IL

Average sunshine days in October - Grant Park, IL
  • Average sunshine days in October: 18.2 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is July (10.7 days).

Average UV index in October
Grant Park, IL

Average UV index in October - Grant Park, IL
  • Average UV index in October: 2

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in October
Grant Park, IL

Average cloud cover in October - Grant Park, IL
  • Average cloud cover in October: 39

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in October
Grant Park, IL

Average visibility in October - Grant Park, IL
  • Average visibility in October: 6mi

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

Grant Park, Illinois, USA

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