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
Libertyville's September weather shows a modest shift in high-temperatures, falling from August's 81.5°F (27.5°C) to a still warm 76.1°F (24.5°C). An average low-temperature of 56.3°F (13.5°C) is common in Libertyville during the nights of September.Humidity
The average relative humidity in September in Libertyville, Iowa, is 76%.Rainfall
In Libertyville, Iowa, in September, during 12.1 rainfall days, 2.48" (63mm) of precipitation is typically accumulated. Throughout the year, there are 135.6 rainfall days, and 28.66" (728mm) of precipitation is accumulated.Snowfall
In Libertyville, snow does not fall in May through September.Daylight
In Libertyville, Iowa, the average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:40 pm. On the last day of September, in Libertyville, sunrise is at 7:04 am and sunset at 6:51 pm CDT.
Sunshine
The average sunshine in September in Libertyville, Iowa, is 9.3h.UV index
In Libertyville, Iowa, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: A maximum daily UV index of 4 during September morphs into the following directions:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. When the Sun is at its strongest around midday, find shade and limit exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Frequently asked questions
What is the average September temperature in Libertyville?
What is the average humidity in September in Libertyville?
How many days does it rain in September in Libertyville?
When it does not snow in Libertyville?
Does it snow in Libertyville in September?
How many hours of daylight does Libertyville have in September?
When are sunrise and sunset in September in Libertyville?
How many hours of sunshine does Libertyville have in September?
How high is the UV index in September in Libertyville?
Average temperature in September
Libertyville, IA
- Average high temperature in September: 76.1°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 (29.1°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in September
Libertyville, IA
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Libertyville, IA
- Average wind speed in September: 8mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in September
Libertyville, IA
- Average humidity in September: 76%
The months with the highest relative humidity are June and July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Libertyville, IA
- Average rainfall in September: 2.48"
The wettest month (with the highest rainfall) is May (4.45").
The driest months (with the least rainfall) are January and December (1.18").
Average rainfall days in September
Libertyville, IA
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in September
Libertyville, IA
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (4.33").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Libertyville, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Libertyville, IA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Libertyville, IA
- Average sunshine days in September: 16.5 days
The months with the most sunshine days are October and November (18.8 days).
The month with the least sunshine days is May (11 days).
Average UV index in September
Libertyville, IA
- Average UV index in September: 4
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 September
Libertyville, IA
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in September
Libertyville, IA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Libertyville, Iowa, USA
Weather forecast for your location
2. Allow the app to use your location
