Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The arrival of September is marked by a minor reduction in average high-temperature, sliding from a hot 87.3°F (30.7°C) in August to a moderately hot 81.7°F (27.6°C). New Liberty's temperature tends to fall to an average low of 61.9°F (16.6°C) during the nights of September.Heat index
September's heat index is evaluated at a tropical 86°F (30°C). Enduring exposure and ongoing activity could cause a sense of fatigue and subsequent heat cramps.Factoring in the heat index, values are geared towards shaded areas with light breezes. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Humidity
The average relative humidity in September is 72%.Rainfall
The month with the least rainfall is September, when the rain falls for 8.6 days and typically collects 0.63" (16mm) of precipitation.Snowfall
April through October are months without snowfall in New Liberty.Daylight
In September, the average length of the day is 12h and 25min.On the first day of the month, sunrise is at 6:25 am and sunset at 7:21 pm. On the last day of September, sunrise is at 6:48 am and sunset at 6:38 pm CDT.
Sunshine
In New Liberty, the average sunshine in September is 9.3h.UV index
In New Liberty, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 5 translates into these guidelines:
Put precautions into practice - Guidance to elude sunburn is provided. The solar radiation around mid-day is intense; avoid the Sun and stay safe. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Frequently asked questions
What is the usual temperature for New Liberty in September?
What is the average humidity in September in New Liberty?
What is the driest month in New Liberty?
How many days does it rain in September in New Liberty?
When it does not snow in New Liberty?
What is the average length of the day in September in New Liberty?
When is the sunrise / sunset in September in New Liberty?
How many hours of sunshine does New Liberty have in September?
What is the UV index intensity in September in New Liberty?
Average temperature in September
New Liberty, IL
- Average high temperature in September: 81.7°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (41.5°F).
- Average low temperature in September: 61.9°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (28.6°F).
Average pressure in September
New Liberty, IL
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
New Liberty, IL
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is April (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in September
New Liberty, IL
- Average humidity in September: 72%
The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
New Liberty, IL
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is September (0.63").
Average rainfall days in September
New Liberty, IL
- Average rainfall days in September: 8.6 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is October (7.6 days).
Average snowfall in September
New Liberty, IL
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.71").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
New Liberty, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
New Liberty, IL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 9h and 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
New Liberty, IL
- Average sunshine days in September: 19.9 days
The month with the most sunshine days is October (22.3 days).
The month with the least sunshine days is July (14.2 days).
Average UV index in September
New Liberty, IL
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
New Liberty, IL
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are June and September (Cloud cover 28).
Average visibility in September
New Liberty, IL
- Average visibility in September: 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).
New Liberty, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location
