October weather forecast
Gerlaw, IL

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Weather in October

October, the same as September, is another comfortable autumn month in Gerlaw, Illinois, with an average temperature ranging between max 61.7°F (16.5°C) and min 45.9°F (7.7°C).

Temperature

October is characterized by a reduction in the average high-temperature, from a moderately hot 75.9°F (24.4°C) in September to a comfortable 61.7°F (16.5°C). During October in Gerlaw, the average low-temperature is recorded at a frosty 45.9°F (7.7°C).

Humidity

The least humid month is October, with an average relative humidity of 71%.

Rainfall

In Gerlaw, in October, it is raining for 11.9 days, with typically 2.6" (66mm) of accumulated precipitation. In Gerlaw, during the entire year, the rain falls for 149.4 days and collects up to 30.16" (766mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall in Gerlaw. October is the first month it typically snows. Throughout October, in the average 0.4 snowfall days, it receives 0.59" (15mm) of snow. In Gerlaw, during the entire year, snow falls for 36.7 days and aggregates up to 15.31" (389mm) of snow.

Daylight

In Gerlaw, Illinois, the average length of the day in October is 11h and 6min.
On the first day of October in Gerlaw, Illinois, sunrise is at 6:59 am and sunset at 6:43 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 5:59 pm CDT.

Sunshine

The average sunshine in October is 5.6h.

UV index

In October, the average daily maximum UV index in Gerlaw is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: In October, a daily UV index of 3 turns into the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are October temperatures in Gerlaw?

In Gerlaw, 61.7°F (16.5°C) is the average high-temperature and 45.9°F (7.7°C) is the average low-temperature during October. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in August is computed to be 86°F (30°C).

What is the least humid month in Gerlaw?

With an average relative humidity of 71%, October is the least humid month in Gerlaw, Illinois.

What is the average humidity in October in Gerlaw?

In Gerlaw, the average relative humidity in October is 71%.

How much does it rain in Gerlaw in October?

In October, in Gerlaw, Illinois, the rain falls for 11.9 days. Throughout October, 2.6" (66mm) of precipitation is accumulated.

When does it start snowing in Gerlaw?

October is the first month it typically snows in Gerlaw, Illinois. Throughout October, in the average 0.4 snowfall days, it receives 0.59" (15mm) of snow.

How many hours of daylight does Gerlaw have in October?

In October, the average day length in Gerlaw is 11h and 6min.

When is the sunrise / sunset in October in Gerlaw?

In October, on the first day of the month, sunrise is at 6:59 am and sunset at 6:43 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 5:59 pm CDT.

How many hours of sunshine does Gerlaw have in October?

In Gerlaw, Illinois, the average sunshine duration in October is 5.6h.

How high is the UV index in October in Gerlaw?

In October, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to Sun's UV rays.
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
Gerlaw, IL

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

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (29.7°F).

  • Average low temperature in October: 45.9°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 (17.6°F).

Average pressure in October
Gerlaw, IL

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in October
Gerlaw, IL

Average wind speed in October - Gerlaw, IL
  • Average wind speed in October: 9.5mph

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

Average humidity in October
Gerlaw, IL

Average humidity in October - Gerlaw, IL
  • Average humidity in October: 71%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (71%).

Average rainfall in October
Gerlaw, IL

Average rainfall in October - Gerlaw, IL
  • Average rainfall in October: 2.6"

The wettest month (with the highest rainfall) is May (4.25").
The driest month (with the least rainfall) is January (1.46").

Average rainfall days in October
Gerlaw, IL

Average rainfall days in October - Gerlaw, IL
  • Average rainfall days in October: 11.9 days

The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is February (5.8 days).

Average snowfall in October
Gerlaw, IL

Average snowfall in October - Gerlaw, IL
  • Average snowfall in October: 0.59"

The month with the highest snowfall is January (4.61").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in October
Gerlaw, IL

Average snowfall days in October - Gerlaw, IL
  • Average snowfall days in October: 0.4 days

The month with the highest number of snowfall days is January (10.9 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
Gerlaw, IL

Average daylight in October / Average sunshine in October - Gerlaw, 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: 5h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in October
Gerlaw, IL

Average sunshine days in October - Gerlaw, IL
  • Average sunshine days in October: 17.6 days

The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (9.2 days).

Average UV index in October
Gerlaw, IL

Average UV index in October - Gerlaw, IL
  • Average UV index in October: 3

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

Average cloud cover in October
Gerlaw, IL

Average cloud cover in October - Gerlaw, IL
  • Average cloud cover in October: 37

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 30).

Average visibility in October
Gerlaw, IL

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

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

Gerlaw, Illinois, USA

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