Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
Arrival of October comes with a reduction in the average high-temperature, falling from a pleasant 72.1°F (22.3°C) in September to a moderate 59.9°F (15.5°C). In October, River Forest's temperature tends to fall to an average low of 47.8°F (8.8°C) during the night.Humidity
October is the least humid month, with an average relative humidity of 72%.Rainfall
In October, the rain falls for 13.6 days. Throughout October, 2.68" (68mm) of precipitation is accumulated. Throughout the year, there are 157.8 rainfall days, and 33.7" (856mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. October is the first month it typically snows. Throughout October, in the average 0.2 snowfall days, it receives 0.31" (8mm) of snow. Throughout the year, there are 40.3 snowfall days, and 16.81" (427mm) of snow is accumulated.Daylight
In October, the average length of the day 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, sunrise is at 7:23 am and sunset at 5:46 pm CDT.
Sunshine
In River Forest, the average sunshine in October is 5.8h.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 ordinary individuals.Note: During October, 2 as the daily maximum UV index converts into the following advice:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are October temperatures?
What is the least humid month?
What is the average humidity in October?
How many days does it rain in October?
When does it start snowing?
How many hours of daylight does River Forest have in October?
What time are sunrise and sunset in October?
How long on average sun shines in October in River Forest?
How high is the UV index in October?
Average temperature in October
River Forest, IL
- Average high temperature in October: 59.9°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 (28.9°F).
- Average low temperature in October: 47.8°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).
Average pressure in October
River Forest, 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
River Forest, IL
- Average wind speed in October: 10.1mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in October
River Forest, IL
- Average humidity in October: 72%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall in October
River Forest, IL
- Average rainfall in October: 2.68"
The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is December (1.57").
Average rainfall days in October
River Forest, IL
- Average rainfall days in October: 13.6 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is February (5.1 days).
Average snowfall in October
River Forest, IL
- Average snowfall in October: 0.31"
The month with the highest snowfall is February (4.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
River Forest, IL
- Average snowfall days in October: 0.2 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
River Forest, 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 42min).
Average sunshine days in October
River Forest, IL
- Average sunshine days in October: 15.1 days
The month with the most sunshine days is December (16.7 days).
The month with the least sunshine days is July (9.9 days).
Average UV index in October
River Forest, 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
River Forest, IL
- Average cloud cover in October: 42
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
River Forest, 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).
River Forest, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location