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
In September, the average high-temperature marginally decreases from a moderately hot 78.6°F (25.9°C) in August to an agreeable 73°F (22.8°C). Scales Mound registers a consistent average low-temperature of 53.1°F (11.7°C) during September.Humidity
The average relative humidity in September in Scales Mound is 79%.Rainfall
In September, the rain falls for 12.6 days. Throughout September, 2.68" (68mm) of precipitation is accumulated. In Scales Mound, during the entire year, the rain falls for 153.1 days and collects up to 30.75" (781mm) of precipitation.Snowfall
May through September are months without snowfall in Scales Mound.Daylight
In September, the average length of the day in Scales Mound is 12h and 28min.On the first day of September in Scales Mound, Illinois, sunrise is at 6:26 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:43 pm CDT.
Sunshine
In September, the average sunshine in Scales Mound is 9h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In September, the UV index of 4 transforms into the following advice:
Heed the precautions - It is counselled to guard against solar damage. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Scales Mound in September?
What is the average humidity in September in Scales Mound?
How much does it rain in Scales Mound in September?
When it does not snow in Scales Mound?
Does it snow in Scales Mound in September?
How many hours of daylight does Scales Mound have in September?
When are sunrise and sunset in September in Scales Mound?
How long on average sun shines in September in Scales Mound?
What is the UV index reading in September in Scales Mound?
Average temperature in September
Scales Mound, IL
- Average high temperature in September: 73°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (25°F).
- Average low temperature in September: 53.1°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).
Average pressure in September
Scales Mound, IL
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Scales Mound, IL
- Average wind speed in September: 7.6mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in September
Scales Mound, IL
- Average humidity in September: 79%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (76%).
Average rainfall in September
Scales Mound, IL
- Average rainfall in September: 2.68"
The wettest month (with the highest rainfall) is June (4.29").
The driest month (with the least rainfall) is January (1.26").
Average rainfall days in September
Scales Mound, IL
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is May (20 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in September
Scales Mound, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (5.12").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Scales Mound, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.2 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
Scales Mound, IL
- Average daylight in September: 12h and 3min
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 6min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Scales Mound, IL
- Average sunshine days in September: 14.6 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is June (7.9 days).
Average UV index in September
Scales Mound, IL
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Scales Mound, IL
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in September
Scales Mound, IL
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and July (5mi).
Scales Mound, Illinois, USA
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