October weather forecast
Riverside, IL

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Weather in October

October, like September, is a moderate autumn month in Riverside, Illinois, with temperature in the range of an average low of 47.7°F (8.7°C) and an average high of 59.9°F (15.5°C).

Temperature

The shift from September to October corresponds with a decrease in the average high-temperature, down to a refreshing 59.9°F (15.5°C) from an agreeable 72.9°F (22.7°C). In October, Riverside's temperature tends to fall to an average low of 47.7°F (8.7°C) during the night.

Humidity

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

Rainfall

In Riverside, in October, during 6.7 rainfall days, 0.67" (17mm) of precipitation is typically accumulated. Throughout the year, in Riverside, there are 92 rainfall days, and 7.4" (188mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Riverside are January through April, October through December. October is the first month it typically snows in Riverside, Illinois. Throughout October, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In Riverside, during the entire year, snow falls for 26.5 days and aggregates up to 4.06" (103mm) of snow.

Daylight

The average length of the day in October in Riverside is 11h and 4min.
On the first day of the month, sunrise is at 6:48 am and sunset at 6:32 pm. On the last day of October, in Riverside, sunrise is at 7:23 am and sunset at 5:46 pm CDT.

Sunshine

In October, the average sunshine in Riverside, Illinois, is 5.8h.

UV index

In October, the average daily maximum UV index in Riverside is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum high daily UV index of 2 during October translates into the following directions:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Riverside in October?

October temperatures in Riverside, Illinois, vary between a high-temperature of 59.9°F (15.5°C) and a low-temperature of 47.7°F (8.7°C).

What is the least humid month in Riverside?

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

What is the average humidity in October in Riverside?

The average relative humidity in October in Riverside is 72%.

How much does it rain in Riverside in October?

In Riverside, in October, it is raining for 6.7 days, with typically 0.67" (17mm) of accumulated precipitation.

When does it start snowing in Riverside?

October is the first month it typically snows in Riverside. Throughout October, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow.

What is the average length of the day in October in Riverside?

In October, the average day length in Riverside, Illinois, is 11h and 4min.

What time are sunrise and sunset in October in Riverside?

On the first day of October in Riverside, sunrise is at 6:48 am and sunset at 6:32 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 5:46 pm CDT.

How many hours of sunshine does Riverside have in October?

The average sunshine duration in October in Riverside, Illinois, is 5.8h.

What is the UV index reading in October in Riverside?

The average daily maximum UV index in October in Riverside is 2. A UV Index reading of 2, and below, represents a minimal hazard to health 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
Riverside, IL

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

The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (29.1°F).

  • Average low temperature in October: 47.7°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).

Average pressure in October
Riverside, IL

Average pressure in October - Riverside, IL
  • Average pressure in October: 30.01"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
Riverside, IL

Average wind speed in October - Riverside, IL
  • Average wind speed in October: 9.9mph

The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).

Average humidity in October
Riverside, IL

Average humidity in October - Riverside, IL
  • Average humidity in October: 72%

The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).

Average rainfall in October
Riverside, IL

Average rainfall in October - Riverside, IL
  • Average rainfall in October: 0.67"

The wettest month (with the highest rainfall) is May (1.1").
The driest months (with the least rainfall) are February, March, November and December (0.39").

Average rainfall days in October
Riverside, IL

Average rainfall days in October - Riverside, IL
  • Average rainfall days in October: 6.7 days

The month with the highest number of rainy days is June (11.7 days).
The month with the least rainy days is January (3.1 days).

Average snowfall in October
Riverside, IL

Average snowfall in October - Riverside, IL
  • Average snowfall in October: 0.04"

The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in October
Riverside, IL

Average snowfall days in October - Riverside, IL
  • Average snowfall days in October: 0.1 days

The month with the highest number of snowfall days is February (7.3 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
Riverside, IL

Average daylight in October / Average sunshine in October - Riverside, 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 5min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days in October
Riverside, IL

Average sunshine days in October - Riverside, IL
  • Average sunshine days in October: 22.4 days

The month with the most sunshine days is December (23.7 days).
The month with the least sunshine days is June (14.3 days).

Average UV index in October
Riverside, IL

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

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

Average cloud cover in October
Riverside, IL

Average cloud cover in October - Riverside, IL
  • Average cloud cover in October: 41

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in October
Riverside, IL

Average visibility in October - Riverside, 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).

Riverside, Illinois, USA

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