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
Welcoming October, Deerfield observes a shift in the average high-temperature, falling from September's pleasant 71.2°F (21.8°C) to a refreshing 58.6°F (14.8°C). Nighttime temperature dips to a mean of 47.7°F (8.7°C) during October.Humidity
The least humid month is October, with an average relative humidity of 73%.Rainfall
In Deerfield, during October, the rain falls for 14.7 days and regularly aggregates up to 2.64" (67mm) of precipitation. Throughout the year, there are 154.1 rainfall days, and 30.24" (768mm) 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 0.5 snowfall days, it receives 0.12" (3mm) of snow. Throughout the year, there are 42.9 snowfall days, and 13.82" (351mm) of snow is accumulated.Daylight
The average length of the day in October in Deerfield is 11h and 3min.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 7:24 am and sunset at 5:45 pm CDT.
Sunshine
In October, the average sunshine is 5.7h.UV index
In October, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for average individuals.Note: In October, the maximum UV index of 2 suggests this advice:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. To cut down UV radiation exposure by about half, sport a wide-brim hat. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
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 much does it rain in Deerfield in October?
When does it start to snow?
What is the average length of the day in October in Deerfield?
When are sunrise and sunset in October?
How many hours of sunshine does Deerfield have in October?
What is the UV index reading in October?
Average temperature in October
Deerfield, IL
- Average high temperature in October: 58.6°F
The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in October: 47.7°F
The months with the highest average low temperature are July and August (66.7°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in October
Deerfield, IL
- Average pressure in October: 30"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in October
Deerfield, IL
- Average wind speed in October: 10.7mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (7.4mph).
Average humidity in October
Deerfield, IL
- Average humidity in October: 73%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in October
Deerfield, IL
- Average rainfall in October: 2.64"
The wettest months (with the highest rainfall) are May and June (3.82").
The driest month (with the least rainfall) is December (1.3").
Average rainfall days in October
Deerfield, IL
- Average rainfall days in October: 14.7 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (5.9 days).
Average snowfall in October
Deerfield, IL
- Average snowfall in October: 0.12"
The month with the highest snowfall is January (4.13").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in October
Deerfield, IL
- Average snowfall days in October: 0.5 days
The month with the highest number of snowfall days is January (11.9 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
Deerfield, 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 42min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in October
Deerfield, IL
- Average sunshine days in October: 13.6 days
The month with the most sunshine days is December (15.3 days).
The month with the least sunshine days is April (10.8 days).
Average UV index in October
Deerfield, IL
- Average UV index in October: 2
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in October
Deerfield, IL
- Average cloud cover in October: 42
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility in October
Deerfield, 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).
Deerfield, Illinois, USA
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