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 signifies a gentle decline in Garden Prairie's average high-temperature, easing from a warm 78.1°F (25.6°C) in August to a pleasant 72.3°F (22.4°C). Garden Prairie anticipates an average minimum temperature of 54.1°F (12.3°C) in the month of September.Humidity
In September, the average relative humidity is 80%.Rainfall
In Garden Prairie, in September, during 12.6 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. In Garden Prairie, during the entire year, the rain falls for 154 days and collects up to 30.47" (774mm) of precipitation.Snowfall
In Garden Prairie, snow does not fall in May through September.Daylight
In Garden Prairie, 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 6:51 am and sunset at 6:37 pm CDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
In Garden Prairie, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: The daily maximum UV index of 4 in September interprets into the following advice:
Adopt protective measures - It is advised to guard against sun damage. Around midday, solar radiation is most harmful; hence, exposure should be limited. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Garden Prairie have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Garden Prairie, 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
Garden Prairie, 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
Garden Prairie, 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
Garden Prairie, 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
Garden Prairie, 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
Garden Prairie, 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
Garden Prairie, 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
Garden Prairie, 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
Garden Prairie, 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 12min).
- 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
Garden Prairie, 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
Garden Prairie, 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
Garden Prairie, 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
Garden Prairie, 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).
Garden Prairie, Illinois, USA
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