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
The dawn of September sees an average high-temperature of a still moderately hot 77.4°F (25.2°C), subtly contrasting with August's 82°F (27.8°C). Pleasant Plains's average low-temperature during September nights is observed to be a refreshing 58.5°F (14.7°C).Humidity
In Pleasant Plains, the average relative humidity in September is 75%.Rainfall
In Pleasant Plains, in September, it is raining for 11.9 days, with typically 2.87" (73mm) of accumulated precipitation. In Pleasant Plains, during the entire year, the rain falls for 146.4 days and collects up to 30.67" (779mm) of precipitation.Snowfall
In Pleasant Plains, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 26min.On the first day of September, sunrise is at 6:28 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:43 pm CDT.
Sunshine
The average sunshine in September is 9.1h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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 many days does it rain in September?
When it does not snow in Pleasant Plains?
Does it snow in Pleasant Plains in September?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Pleasant Plains have in September?
What is the UV index intensity in September?
Average temperature in September
Pleasant Plains, IL
- Average high temperature in September: 77.4°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (32.9°F).
- Average low temperature in September: 58.5°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in September
Pleasant Plains, IL
- 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 (29.91"Hg).
Average wind speed in September
Pleasant Plains, IL
- Average wind speed in September: 7.2mph
The windiest months (with the highest average wind speed) are January, February and April (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in September
Pleasant Plains, IL
- Average humidity in September: 75%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Pleasant Plains, IL
- Average rainfall in September: 2.87"
The wettest month (with the highest rainfall) is May (3.82").
The driest month (with the least rainfall) is December (1.5").
Average rainfall days in September
Pleasant Plains, IL
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (6.2 days).
Average snowfall in September
Pleasant Plains, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.02").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Pleasant Plains, IL
- 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
Pleasant Plains, IL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Pleasant Plains, IL
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in September
Pleasant Plains, IL
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Pleasant Plains, IL
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Pleasant Plains, 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).
Pleasant Plains, Illinois, USA
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