September weather forecast
Toulon, IL

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Weather in September

September, the first month of the autumn in Toulon, is still a warm month, with an average temperature varying between 56.3°F (13.5°C) and 74.8°F (23.8°C).

Temperature

Toulon records an average high-temperature of a still moderately hot 74.8°F (23.8°C) as September arrives, nearly mirroring the previous month's climate. The low-temperature average for Toulon during September stands at a refreshing 56.3°F (13.5°C).

Humidity

The average relative humidity in September is 77%.

Rainfall

In Toulon, in September, it is raining for 11.5 days, with typically 2.05" (52mm) of accumulated precipitation. In Toulon, during the entire year, the rain falls for 147.2 days and collects up to 29.17" (741mm) of precipitation.

Snowfall

In Toulon, 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 September in Toulon, sunrise is at 6:26 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:42 pm CDT.

Sunshine

The average sunshine in September is 9.2h.

UV index

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: A daily maximum UV index of 4 in September translates into the following instructions:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Experience reduced UV exposure by about half when donning a wide-brim hat.
Updated: Jul 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature?

The average high-temperature and low-temperature during September are 74.8°F (23.8°C) and 56.3°F (13.5°C) respectively. In July, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, is evaluated at 87.8°F (31°C).

What is the average humidity in September?

In Toulon, the average relative humidity in September is 77%.

How many days does it rain in September?

In September, the rain falls for 11.5 days. Throughout September, 2.05" (52mm) of precipitation is accumulated.

When it does not snow?

May through September are months without snowfall.

Does it snow in Toulon in September?

In Toulon, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September?

The average day length in September is 12h and 28min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:26 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:42 pm CDT.

How many hours of sunshine does Toulon have in September?

In September, the average sunshine duration in Toulon is 9.2h.

What is the UV index reading in September?

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Toulon, IL

Average temperature in September - Toulon, IL
  • Average high temperature in September: 74.8°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in September: 56.3°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).

Average pressure in September
Toulon, IL

Average pressure in September - Toulon, IL
  • Average pressure in September: 30.03"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in September
Toulon, IL

Average wind speed in September - Toulon, IL
  • Average wind speed in September: 7.8mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

Average humidity in September
Toulon, IL

Average humidity in September - Toulon, 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
Toulon, IL

Average rainfall in September - Toulon, IL
  • Average rainfall in September: 2.05"

The wettest month (with the highest rainfall) is May (4.45").
The driest months (with the least rainfall) are January and December (1.42").

Average rainfall days in September
Toulon, IL

Average rainfall days in September - Toulon, IL
  • Average rainfall days in September: 11.5 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (5.6 days).

Average snowfall in September
Toulon, IL

Average snowfall in September - Toulon, IL
  • Average snowfall in September: 0"

The month with the highest snowfall is January (3.66").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Toulon, IL

Average snowfall days in September - Toulon, IL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (11.4 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
Toulon, IL

Average daylight in September / Average sunshine in September - Toulon, 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: 9h and 1min

The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in September
Toulon, IL

Average sunshine days in September - Toulon, IL
  • Average sunshine days in September: 16.2 days

The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (10.2 days).

Average UV index in September
Toulon, IL

Average UV index in September - Toulon, IL
  • Average UV index in September: 4

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in September
Toulon, IL

Average cloud cover in September - Toulon, IL
  • Average cloud cover in September: 30

The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are August and September (Cloud cover 30).

Average visibility in September
Toulon, IL

Average visibility in September - Toulon, 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).

Toulon, Illinois, USA

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