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
In the transition to October, River Grove observes a drop in the average high-temperature, moving from a pleasant 72.1°F (22.3°C) in September to a mild 59.9°F (15.5°C). An average temperature of 47.8°F (8.8°C) marks the nights in October.Humidity
With an average relative humidity of 72%, October is the least humid month.Rainfall
In October, the rain falls for 13.6 days. Throughout October, 2.68" (68mm) of precipitation is accumulated. In River Grove, during the entire year, the rain falls for 157.8 days and collects up to 33.7" (856mm) of precipitation.Snowfall
Months with snowfall in River Grove, Illinois, are January through May, October through December. October is the first month it typically snows in River Grove. Throughout October, in the average 0.2 snowfall days, it receives 0.31" (8mm) of snow. In River Grove, during the entire year, snow falls for 40.3 days and aggregates up to 16.81" (427mm) of snow.Daylight
In October, the average length of the day is 11h and 4min.On the first day of the month, sunrise is at 6:49 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 Grove, Illinois, the average sunshine in October is 5.8h.UV index
The average daily maximum UV index in October is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: In October, the maximum UV index of 2 suggests these recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average October temperature in River Grove?
What is the least humid month in River Grove?
What is the average humidity in October in River Grove?
How much does it rain in River Grove in October?
When does it start to snow in River Grove?
What is the average length of the day in October in River Grove?
What time are sunrise and sunset in October in River Grove?
How many hours of sunshine does River Grove have in October?
How high is the UV index in October in River Grove?
Average temperature in October
River Grove, 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 Grove, 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 Grove, 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 Grove, 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 Grove, 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 Grove, 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 Grove, 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 Grove, 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 Grove, 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 Grove, 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 Grove, 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 Grove, 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 Grove, 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 Grove, Illinois, USA
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