October weather forecast
Cortland, IL

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Weather in October

October, like September, is another refreshing autumn month in Cortland, Illinois, with an average temperature ranging between max 59.9°F (15.5°C) and min 44.1°F (6.7°C).

Temperature

Cortland's progression into October involves a drop in the average high-temperature, receding from an agreeable 73°F (22.8°C) in September to a refreshing 59.9°F (15.5°C). Cortland records an average temperature drop to a chilly 44.1°F (6.7°C) in October.

Humidity

April and October, with an average relative humidity of 75%, are the least humid months.

Rainfall

In October, in Cortland, the rain falls for 13.1 days. Throughout October, 2.68" (68mm) of precipitation is accumulated. Throughout the year, in Cortland, Illinois, there are 152.6 rainfall days, and 32.09" (815mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. October is the first month it typically snows in Cortland. Throughout October, in the average 0.8 snowfall days, it receives 0.2" (5mm) of snow. Throughout the year, in Cortland, there are 44.3 snowfall days, and 17.87" (454mm) of snow is accumulated.

Daylight

In Cortland, the average length of the day in October is 11h and 4min.
On the first day of the month, sunrise is at 6:52 am and sunset at 6:35 pm. On the last day of October, in Cortland, sunrise is at 7:26 am and sunset at 5:49 pm CDT.

Sunshine

In Cortland, the average sunshine in October is 5.4h.

UV index

The average daily maximum UV index in October is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index, 2 during October, leads to the following recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
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Frequently asked questions

What is the temperature in October in Cortland?

During October, Cortland experiences an average high-temperature of 59.9°F (15.5°C) and a low-temperature of 44.1°F (6.7°C).

What are the least humid months in Cortland?

The months with the lowest humidity in Cortland, Illinois, are April and October, with an average relative humidity of 75%.

What is the average humidity in October in Cortland?

The average relative humidity in October in Cortland is 75%.

How many days does it rain in October in Cortland?

In Cortland, in October, it is raining for 13.1 days, with typically 2.68" (68mm) of accumulated precipitation.

When does it start to snow in Cortland?

October is the first month it typically snows in Cortland, Illinois. Throughout October, in the average 0.8 snowfall days, it receives 0.2" (5mm) of snow.

How many hours of daylight does Cortland have in October?

The average day length in October in Cortland, Illinois, is 11h and 4min.

What time are sunrise and sunset in October in Cortland?

On the first day of October in Cortland, sunrise is at 6:52 am and sunset at 6:35 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 5:49 pm CDT.

How many hours of sunshine does Cortland have in October?

The average sunshine duration in October is 5.4h.

How high is the UV index in October in Cortland?

The average daily maximum UV index in October is 2. A UV Index value 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
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Cortland, IL

Average temperature in October - Cortland, IL
  • Average high temperature in October: 59.9°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (27°F).

  • Average low temperature in October: 44.1°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).

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Average pressure in October
Cortland, IL

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

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in October
Cortland, IL

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

The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity in October
Cortland, IL

Average humidity in October - Cortland, IL
  • Average humidity in October: 75%

The months with the highest relative humidity are January and July (85%).
The months with the lowest relative humidity are April and October (75%).

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Average rainfall in October
Cortland, IL

Average rainfall in October - Cortland, IL
  • Average rainfall in October: 2.68"

The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is February (1.65").

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Average rainfall days in October
Cortland, IL

Average rainfall days in October - Cortland, IL
  • Average rainfall days in October: 13.1 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (4.7 days).

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Average snowfall in October
Cortland, IL

Average snowfall in October - Cortland, IL
  • Average snowfall in October: 0.2"

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

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Average snowfall days in October
Cortland, IL

Average snowfall days in October - Cortland, IL
  • Average snowfall days in October: 0.8 days

The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in October /
Average sunshine in October
Cortland, IL

Average daylight in October / Average sunshine in October - Cortland, 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 2min

The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

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Average sunshine days in October
Cortland, IL

Average sunshine days in October - Cortland, IL
  • Average sunshine days in October: 15.4 days

The month with the most sunshine days is November (17.2 days).
The months with the least sunshine days are June and July (10.3 days).

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Average UV index in October
Cortland, IL

Average UV index in October - Cortland, IL
  • Average UV index in October: 2

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

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Average cloud cover in October
Cortland, IL

Average cloud cover in October - Cortland, IL
  • Average cloud cover in October: 43

The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 35).

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Average visibility in October
Cortland, IL

Average visibility in October - Cortland, IL
  • Average visibility in October: 6mi

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

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Cortland, Illinois, USA

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