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
With October's onset, the average high-temperature recedes from September's warm 74.3°F (23.5°C) to a moderate 60.6°F (15.9°C). During the month of October, an average temperature of 45.7°F (7.6°C) is noted during the nights.Humidity
October is the least humid month in Downers Grove, with an average relative humidity of 72%.Rainfall
In October, the rain falls for 9.8 days. Throughout October, 1.22" (31mm) of precipitation is accumulated. Throughout the year, in Downers Grove, there are 118.5 rainfall days, and 13.74" (349mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. October is the first month it typically snows. Throughout October, in the average 0.4 snowfall days, it receives 0.2" (5mm) of snow. Throughout the year, there are 34.9 snowfall days, and 7.2" (183mm) of snow is accumulated.Daylight
The average length of the day in October in Downers Grove is 11h and 4min.On the first day of the month, sunrise is at 6:49 am and sunset at 6:33 pm. On the last day of October, in Downers Grove, sunrise is at 7:24 am and sunset at 5:47 pm CDT.
Sunshine
In October, the average sunshine is 5.6h.UV index
The average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high UV index of 3 in October translates into the following recommendations:
Exercise prevention - Precautions against solar damage are endorsed. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
What are the temperatures in Downers Grove in October?
What is the least humid month in Downers Grove?
What is the average humidity in October in Downers Grove?
How many days does it rain in October in Downers Grove?
When does it start snowing in Downers Grove?
What is the average length of the day in October in Downers Grove?
When are sunrise and sunset in October in Downers Grove?
How long on average sun shines in October in Downers Grove?
How high is the UV index in October in Downers Grove?
Average temperature in October
Downers Grove, IL
- Average high temperature in October: 60.6°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in October: 45.7°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in October
Downers 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
Downers Grove, IL
- Average wind speed in October: 8.6mph
The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in October
Downers Grove, 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
Downers Grove, IL
- Average rainfall in October: 1.22"
The wettest month (with the highest rainfall) is May (1.97").
The driest month (with the least rainfall) is December (0.63").
Average rainfall days in October
Downers Grove, IL
- Average rainfall days in October: 9.8 days
The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is February (4.2 days).
Average snowfall in October
Downers Grove, IL
- Average snowfall in October: 0.2"
The month with the highest snowfall is February (2.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in October
Downers Grove, IL
- Average snowfall days in October: 0.4 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Downers 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 4min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in October
Downers Grove, IL
- Average sunshine days in October: 19.6 days
The month with the most sunshine days is December (20.7 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in October
Downers Grove, IL
- Average UV index in October: 3
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in October
Downers 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 31).
Average visibility in October
Downers 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).
Downers Grove, Illinois, USA
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