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
The average high-temperature decreases in October, shifting from a warm 76.1°F (24.5°C) in September to a comfortable 63.3°F (17.4°C). The temperature dips to an average of 46.9°F (8.3°C) during October nights.Humidity
With an average relative humidity of 70%, October is the least humid month in McLean.Rainfall
In October, the rain falls for 9.8 days. Throughout October, 1.34" (34mm) of precipitation is accumulated. Throughout the year, in McLean, there are 135 rainfall days, and 17.72" (450mm) of precipitation is accumulated.Snowfall
In McLean, snow does not fall in May through October.Daylight
In McLean, Illinois, the average length of the day in October is 11h and 7min.On the first day of October in McLean, sunrise is at 6:53 am and sunset at 6:38 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 5:54 pm CDT.
Sunshine
In October, the average sunshine in McLean is 6h.UV index
In McLean, the average daily maximum UV index in October is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index, 3 during October, leads to the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Around midday, solar radiation is most harmful; hence, exposure should be limited. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average October temperature in McLean?
What is the least humid month in McLean?
What is the average humidity in October in McLean?
How many days does it rain in October in McLean?
When it does not snow in McLean?
Does it snow in McLean in October?
What is the average length of the day in October in McLean?
When are sunrise and sunset in October in McLean?
How many hours of sunshine does McLean have in October?
What is the UV index intensity in October in McLean?
Average temperature in October
McLean, IL
- Average high temperature in October: 63.3°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in October: 46.9°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in October
McLean, IL
- Average pressure in October: 30.02"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in October
McLean, IL
- Average wind speed in October: 9.3mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in October
McLean, IL
- Average humidity in October: 70%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (70%).
Average rainfall in October
McLean, IL
- Average rainfall in October: 1.34"
The wettest month (with the highest rainfall) is May (2.2").
The driest month (with the least rainfall) is December (0.87").
Average rainfall days in October
McLean, IL
- Average rainfall days in October: 9.8 days
The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is February (5.9 days).
Average snowfall in October
McLean, IL
- Average snowfall in October: 0"
The month with the highest snowfall is January (2.2").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in October
McLean, IL
- Average snowfall days in October: 0.2 days
The month with the highest number of snowfall days is January (9.5 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
McLean, IL
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in October: 6h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in October
McLean, IL
- Average sunshine days in October: 19.5 days
The months with the most sunshine days are November and December (20 days).
The month with the least sunshine days is May (11.6 days).
Average UV index in October
McLean, IL
- Average UV index in October: 3
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in October
McLean, IL
- Average cloud cover in October: 36
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in October
McLean, IL
- Average visibility in October: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
McLean, Illinois, USA
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