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 Thomasboro, September's average high-temperature stands at a still warm 76.1°F (24.5°C), closely related to the preceding month. Throughout the month of September, Thomasboro observes an average nighttime temperature of 57.9°F (14.4°C).Humidity
The average relative humidity in September in Thomasboro, Illinois, is 77%.Rainfall
In September, the rain falls for 9.9 days. Throughout September, 0.75" (19mm) of precipitation is accumulated. In Thomasboro, during the entire year, the rain falls for 121.5 days and collects up to 13.46" (342mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September in Thomasboro is 12h and 26min.On the first day of September in Thomasboro, sunrise is at 6:21 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:36 pm CDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
In September, the average daily maximum UV index in Thomasboro is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 5 during September leads to these advisories:
Ensure safety - Sun damage prevention is strongly urged. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Thomasboro?
What is the average humidity in September in Thomasboro?
How much does it rain in Thomasboro in September?
When it does not snow in Thomasboro?
How many hours of daylight does Thomasboro have in September?
When is the sunrise / sunset in September in Thomasboro?
How long on average sun shines in September in Thomasboro?
What is the UV index reading in September in Thomasboro?
Average temperature in September
Thomasboro, IL
- Average high temperature in September: 76.1°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in September: 57.9°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in September
Thomasboro, IL
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Thomasboro, IL
- Average wind speed in September: 7.4mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in September
Thomasboro, IL
- Average humidity in September: 77%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Thomasboro, IL
- Average rainfall in September: 0.75"
The wettest month (with the highest rainfall) is May (1.77").
The driest month (with the least rainfall) is February (0.67").
Average rainfall days in September
Thomasboro, IL
- Average rainfall days in September: 9.9 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is February (4.6 days).
Average snowfall in September
Thomasboro, IL
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Thomasboro, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.9 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
Thomasboro, 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: 8h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Thomasboro, IL
- Average sunshine days in September: 17.4 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in September
Thomasboro, 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
Thomasboro, IL
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Thomasboro, 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).
Thomasboro, Illinois, USA
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