October weather forecast
Union, IL

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Weather in October

October, like September, is a moderate autumn month in Union, Illinois, with temperature in the range of an average high of 58.8°F (14.9°C) and an average low of 43.2°F (6.2°C).

Temperature

Union, Illinois, in October undergoes a mild reduction in the average high-temperature, shifting from September's agreeable 72.1°F (22.3°C) to a refreshing 58.8°F (14.9°C). In Union, an average temperature of 43.2°F (6.2°C) is noted during October nights.

Humidity

The least humid month is October, with an average relative humidity of 76%.

Rainfall

In October, the rain falls for 13.3 days. Throughout October, 2.4" (61mm) of precipitation is accumulated. Throughout the year, there are 154.6 rainfall days, and 30.31" (770mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall in Union. October is the first month it typically snows in Union. Throughout October, in the average 0.5 snowfall days, it receives 0.08" (2mm) of snow. In Union, during the entire year, snow falls for 44.9 days and aggregates up to 17.24" (438mm) of snow.

Daylight

In Union, the average length of the day in October is 11h and 3min.
On the first day of October in Union, 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 5:48 pm CDT.

Sunshine

The average sunshine in October in Union, Illinois, is 5.4h.

UV index

The average daily maximum UV index in October in Union, Illinois, is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum high daily UV index of 2 during October translates into the following directions:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Opt for tightly woven and loose clothing to enhance protection from the Sun. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Union in October?

The average high-temperature and low-temperature in Union during October are 58.8°F (14.9°C) and 43.2°F (6.2°C) respectively.

What is the least humid month in Union?

With an average relative humidity of 76%, October is the least humid month.

What is the average humidity in October in Union?

In October, the average relative humidity in Union is 76%.

How many days does it rain in October in Union?

In Union, Illinois, during October, the rain falls for 13.3 days and regularly aggregates up to 2.4" (61mm) of precipitation.

When does it start snowing in Union?

October is the first month it typically snows in Union, Illinois. Throughout October, in the average 0.5 snowfall days, it receives 0.08" (2mm) of snow.

How many hours of daylight does Union have in October?

In Union, Illinois, the average day length in October is 11h and 3min.

What time are sunrise and sunset in October in Union?

In October, on the first day of the month, 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 5:48 pm CDT.

How long on average sun shines in October in Union?

The average sunshine duration in October in Union is 5.4h.

What is the UV index intensity in October in Union?

In Union, the average daily maximum UV index in October is 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to 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
Union, IL

Average temperature in October - Union, IL
  • Average high temperature in October: 58.8°F

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (26.1°F).

  • Average low temperature in October: 43.2°F

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).

Average pressure in October
Union, IL

Average pressure in October - Union, 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).

Average wind speed in October
Union, IL

Average wind speed in October - Union, IL
  • Average wind speed in October: 8.6mph

The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).

Average humidity in October
Union, IL

Average humidity in October - Union, IL
  • Average humidity in October: 76%

The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (76%).

Average rainfall in October
Union, IL

Average rainfall in October - Union, IL
  • Average rainfall in October: 2.4"

The wettest month (with the highest rainfall) is June (4.21").
The driest months (with the least rainfall) are February and November (1.5").

Average rainfall days in October
Union, IL

Average rainfall days in October - Union, IL
  • Average rainfall days in October: 13.3 days

The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is February (4.8 days).

Average snowfall in October
Union, IL

Average snowfall in October - Union, IL
  • Average snowfall in October: 0.08"

The month with the highest snowfall is January (5.28").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in October
Union, IL

Average snowfall days in October - Union, IL
  • Average snowfall days in October: 0.5 days

The month with the highest number of snowfall days is January (12.3 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
Union, IL

Average daylight in October / Average sunshine in October - Union, 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).

Average sunshine days in October
Union, IL

Average sunshine days in October - Union, IL
  • Average sunshine days in October: 16.4 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (9.5 days).

Average UV index in October
Union, IL

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

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in October
Union, IL

Average cloud cover in October - Union, IL
  • Average cloud cover in October: 44

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).

Average visibility in October
Union, IL

Average visibility in October - Union, 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).

Union, Illinois, USA

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