September weather forecast
Secor, IL

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Weather in September

September, the first month of the autumn in Secor, is also a moderately hot month, with an average temperature varying between 57°F (13.9°C) and 75.7°F (24.3°C).

Temperature

Secor records an average high-temperature of a still warm 75.7°F (24.3°C) as September arrives, nearly mirroring the previous month's climate. An average low-temperature of 57°F (13.9°C) is anticipated throughout the nights during September.

Humidity

The average relative humidity in September in Secor is 76%.

Rainfall

In Secor, during September, the rain falls for 10.6 days and regularly aggregates up to 1.3" (33mm) of precipitation. Throughout the year, there are 131.6 rainfall days, and 18.86" (479mm) of precipitation is accumulated.

Snowfall

In Secor, snow does not fall in May through October.

Daylight

In Secor, the average length of the day in September is 12h and 27min.
On the first day of the month, sunrise is at 6:24 am and sunset at 7:28 pm. On the last day of September, sunrise is at 6:52 am and sunset at 6:39 pm CDT.

Sunshine

The average sunshine in September in Secor is 9h.

UV index

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Updated: Jul 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

Secor in September has an average high-temperature of 75.7°F (24.3°C) and an average low-temperature of 57°F (13.9°C). In July, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is calculated to be 87.8°F (31°C).

What is the average humidity in September?

In Secor, the average relative humidity in September is 76%.

How many days does it rain in September?

In September, the rain falls for 10.6 days. Throughout September, 1.3" (33mm) of precipitation is accumulated.

When it does not snow?

In Secor, snow does not fall in May through October.

How many hours of daylight does Secor have in September?

The average day length in September is 12h and 27min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:24 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:39 pm CDT.

How long on average sun shines in September?

The average sunshine duration in September is 9h.

What is the UV index intensity in September?

In Secor, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
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
Secor, IL

Average temperature in September - Secor, IL
  • Average high temperature in September: 75.7°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.4°F).

  • Average low temperature in September: 57°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 (18.5°F).

Average pressure in September
Secor, IL

Average pressure in September - Secor, 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
Secor, IL

Average wind speed in September - Secor, IL
  • Average wind speed in September: 7.6mph

The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

Average humidity in September
Secor, IL

Average humidity in September - Secor, IL
  • Average humidity in September: 76%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).

Average rainfall in September
Secor, IL

Average rainfall in September - Secor, IL
  • Average rainfall in September: 1.3"

The wettest month (with the highest rainfall) is May (2.68").
The driest month (with the least rainfall) is January (0.94").

Average rainfall days in September
Secor, IL

Average rainfall days in September - Secor, IL
  • Average rainfall days in September: 10.6 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is February (5.1 days).

Average snowfall in September
Secor, IL

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

The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Secor, IL

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

The month with the highest number of snowfall days is January (10.6 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
Secor, IL

Average daylight in September / Average sunshine in September - Secor, IL
  • Average daylight in September: 12h and 3min

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 18min).

  • Average sunshine in September: 9h and 0min

The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days in September
Secor, IL

Average sunshine days in September - Secor, IL
  • Average sunshine days in September: 17 days

The month with the most sunshine days is November (20 days).
The month with the least sunshine days is July (10.3 days).

Average UV index in September
Secor, IL

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

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

Average cloud cover in September
Secor, IL

Average cloud cover in September - Secor, IL
  • Average cloud cover in September: 32

The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 32).

Average visibility in September
Secor, IL

Average visibility in September - Secor, 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).

Secor, Illinois, USA

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