October weather forecast
Fairview Heights, IL

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Weather in October

October, the same as September, is another comfortable autumn month in Fairview Heights, Illinois, with temperature in the range of an average low of 48.9°F (9.4°C) and an average high of 66.7°F (19.3°C).

Temperature

Fairview Heights's October weather shows a moderate shift in high-temperatures, falling from September's warm 79.3°F (26.3°C) to an enjoyable 66.7°F (19.3°C). In October, the average low-temperature records at a frosty 48.9°F (9.4°C) during the nights.

Humidity

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

Rainfall

In Fairview Heights, in October, it is raining for 10.6 days, with typically 2.95" (75mm) of accumulated precipitation. Throughout the year, in Fairview Heights, there are 147.1 rainfall days, and 35.43" (900mm) of precipitation is accumulated.

Snowfall

In Fairview Heights, snow does not fall in April through October.

Daylight

In Fairview Heights, Illinois, the average length of the day in October is 11h and 11min.
On the first day of the month, sunrise is at 6:56 am and sunset at 6:42 pm. On the last day of October, sunrise is at 7:26 am and sunset at 6:00 pm CDT.

Sunshine

The average sunshine in October is 6.1h.

UV index

In Fairview Heights, the average daily maximum UV index in October is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.
Note: An average UV index of 3 in October transforms into this advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Updated: Jun 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average October temperature?

An average high-temperature, in October, in Fairview Heights, is 66.7°F (19.3°C) and the average low-temperature is 48.9°F (9.4°C). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 95°F (35°C).

What is the least humid month?

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

What is the average humidity in October?

The average relative humidity in October is 71%.

How much does it rain in October?

In October, the rain falls for 10.6 days. Throughout October, 2.95" (75mm) of precipitation is accumulated.

When it does not snow?

In Fairview Heights, snow does not fall in April through October.

Does it snow in October?

In Fairview Heights, Illinois, in October, it doesn't snow. In November, it regularly snows.

What is the average length of the day in October?

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

What time are sunrise and sunset in October?

In October, on the first day of the month, sunrise is at 6:56 am and sunset at 6:42 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 6:00 pm CDT.

How long on average sun shines in October?

The average sunshine duration in October is 6.1h.

What is the UV index reading in October?

In Fairview Heights, the average daily maximum UV index in October is 3. A UV Index estimate of 3 to 5 represents a medium hazard to health from unsafe exposure to Sun's UV rays.
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
Fairview Heights, IL

Average temperature in October - Fairview Heights, IL
  • Average high temperature in October: 66.7°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in October: 48.9°F

The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

Average pressure in October
Fairview Heights, IL

Average pressure in October - Fairview Heights, IL
  • Average pressure in October: 30.03"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in October
Fairview Heights, IL

Average wind speed in October - Fairview Heights, IL
  • Average wind speed in October: 7.9mph

The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).

Average humidity in October
Fairview Heights, IL

Average humidity in October - Fairview Heights, IL
  • Average humidity in October: 71%

The months with the highest relative humidity are May and July (79%).
The month with the lowest relative humidity is October (71%).

Average rainfall in October
Fairview Heights, IL

Average rainfall in October - Fairview Heights, IL
  • Average rainfall in October: 2.95"

The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is February (1.93").

Average rainfall days in October
Fairview Heights, IL

Average rainfall days in October - Fairview Heights, IL
  • Average rainfall days in October: 10.6 days

The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (6.8 days).

Average snowfall in October
Fairview Heights, IL

Average snowfall in October - Fairview Heights, IL
  • Average snowfall in October: 0"

The month with the highest snowfall is January (2.4").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in October
Fairview Heights, IL

Average snowfall days in October - Fairview Heights, IL
  • Average snowfall days in October: 0.1 days

The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are May, June, July and August (0 days).

Average daylight in October /
Average sunshine in October
Fairview Heights, IL

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

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in October: 6h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

Average sunshine days in October
Fairview Heights, IL

Average sunshine days in October - Fairview Heights, IL
  • Average sunshine days in October: 18.3 days

The month with the most sunshine days is October (18.3 days).
The month with the least sunshine days is May (12.3 days).

Average UV index in October
Fairview Heights, IL

Average UV index in October - Fairview Heights, IL
  • Average UV index in October: 3

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in October
Fairview Heights, IL

Average cloud cover in October - Fairview Heights, IL
  • Average cloud cover in October: 34

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 29).

Average visibility in October
Fairview Heights, IL

Average visibility in October - Fairview Heights, IL
  • Average visibility in October: 6mi

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

Fairview Heights, Illinois, USA

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