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
September's arrival brings an average high-temperature of a still warm 74.8°F (23.8°C), demonstrating subtle variation from the preceding month. During the nights in September, Essex experiences a consistent average temperature of 56.8°F (13.8°C).Humidity
The average relative humidity in September in Essex is 77%.Rainfall
In Essex, during September, the rain falls for 12.2 days and regularly aggregates up to 1.65" (42mm) of precipitation. Throughout the year, there are 140.4 rainfall days, and 21.5" (546mm) of precipitation is accumulated.Snowfall
In Essex, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:20 am and sunset at 7:24 pm. On the last day of September, sunrise is at 6:49 am and sunset at 6:35 pm CDT.
Sunshine
In Essex, the average sunshine in September is 8.8h.UV index
The average daily maximum UV index in September in Essex is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 5 in September translates into this advice:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Frequently asked questions
What are September temperatures in Essex?
What is the average humidity in September in Essex?
How many days does it rain in September in Essex?
When it does not snow in Essex?
Does it snow in Essex in September?
How many hours of daylight does Essex have in September?
When is the sunrise / sunset in September in Essex?
How long on average sun shines in September in Essex?
What is the UV index intensity in September in Essex?
Average temperature in September
Essex, IL
- Average high temperature in September: 74.8°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (29.8°F).
- Average low temperature in September: 56.8°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in September
Essex, IL
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Essex, IL
- Average wind speed in September: 7.1mph
The windiest months (with the highest average wind speed) are January and April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in September
Essex, IL
- Average humidity in September: 77%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Essex, IL
- Average rainfall in September: 1.65"
The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days in September
Essex, IL
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is February (5.1 days).
Average snowfall in September
Essex, IL
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.52").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Essex, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.5 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
Essex, IL
- 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: 8h and 5min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Essex, IL
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is July (9.5 days).
Average UV index in September
Essex, IL
- Average UV index in September: 5
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
Essex, IL
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 33).
Average visibility in September
Essex, IL
- Average visibility in September: 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).
Essex, Illinois, USA
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