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
As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from a moderately hot 78.1°F (25.6°C) to an agreeable 72.3°F (22.4°C). Poplar Grove observes an average nighttime low-temperature of 54.1°F (12.3°C) during the month of September.Humidity
In Poplar Grove, Illinois, the average relative humidity in September is 80%.Rainfall
In Poplar Grove, in September, it is raining for 12.6 days, with typically 2.17" (55mm) of accumulated precipitation. In Poplar Grove, during the entire year, the rain falls for 154 days and collects up to 30.47" (774mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Poplar Grove, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:21 am and sunset at 7:28 pm. On the last day of September, sunrise is at 6:52 am and sunset at 6:37 pm CDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
The average daily maximum UV index in September in Poplar Grove is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index of 4 during September leads to these instructions:
Put precautions into practice - Protective measures against sun-induced damage are advised. To protect against the Sun's most potent rays, avoid direct exposure around midday. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Poplar Grove?
What is the average humidity in September in Poplar Grove?
How many days does it rain in September in Poplar Grove?
When it does not snow in Poplar Grove?
Does it snow in Poplar Grove in September?
What is the average length of the day in September in Poplar Grove?
When is the sunrise / sunset in September in Poplar Grove?
How many hours of sunshine does Poplar Grove have in September?
What is the UV index reading in September in Poplar Grove?
Average temperature in September
Poplar Grove, IL
- Average high temperature in September: 72.3°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (25.9°F).
- Average low temperature in September: 54.1°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure in September
Poplar Grove, IL
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Poplar Grove, IL
- Average wind speed in September: 7.2mph
The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in September
Poplar Grove, IL
- Average humidity in September: 80%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
Poplar Grove, IL
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is June (4.09").
The driest month (with the least rainfall) is February (1.46").
Average rainfall days in September
Poplar Grove, IL
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in September
Poplar Grove, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (5.35").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Poplar Grove, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.6 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
Poplar Grove, 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: 8h and 4min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Poplar Grove, IL
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in September
Poplar Grove, IL
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Poplar Grove, IL
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 34).
Average visibility in September
Poplar Grove, IL
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Poplar Grove, Illinois, USA
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