September weather forecast
Eichorn, IL

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Weather in September

The first month of the autumn, September, is still a warm month in Eichorn, Illinois, with an average temperature ranging between max 80.8°F (27.1°C) and min 60.4°F (15.8°C).

Temperature

As August transitions into September, the average high-temperature rests at a still warm 80.8°F (27.1°C), maintaining a close resemblance to the previous month. In the month of September, Eichorn experiences an average low-temperature of 60.4°F (15.8°C).

Heat index

September's average heat index is appraised at 84.2°F (29°C). Exhaustion becomes probable with enduring exposure and activity, potentially causing heat cramps.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.

Humidity

In September, the average relative humidity is 73%.

Rainfall

The month with the least rainfall is September, when the rain falls for 10.5 days and typically collects 1.57" (40mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

The average length of the day in September is 12h and 25min.
On the first day of September, sunrise is at 6:24 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:37 pm CDT.

Sunshine

The average sunshine in September is 9.2h.

UV index

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index of 5 during September translates into the following directions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Updated: Jul 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures?

The high-temperature, in September, in Eichorn, is 80.8°F (27.1°C), while the low-temperature averages to 60.4°F (15.8°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in September is appraised at 84.2°F (29°C).

What is the average humidity in September?

In September, the average relative humidity in Eichorn is 73%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 10.5 days and accumulates 1.57" (40mm) of precipitation.

How many days does it rain in September in Eichorn?

In September, the rain falls for 10.5 days. Throughout September, 1.57" (40mm) of precipitation is accumulated.

When it does not snow?

In Eichorn, snow does not fall in May through September.

Does it snow in Eichorn in September?

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

How many hours of daylight does Eichorn have in September?

In September, the average day length is 12h and 25min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:24 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:37 pm CDT.

How long on average sun shines in September?

The average sunshine duration in September is 9.2h.

How high is the UV index in September?

In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium health risk 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
Eichorn, IL

Average temperature in September - Eichorn, IL
  • Average high temperature in September: 80.8°F

The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in September: 60.4°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).

Average pressure in September
Eichorn, IL

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in September
Eichorn, IL

Average wind speed in September - Eichorn, IL
  • Average wind speed in September: 6.4mph

The windiest months (with the highest average wind speed) are January and February (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

Average humidity in September
Eichorn, IL

Average humidity in September - Eichorn, IL
  • Average humidity in September: 73%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (70%).

Average rainfall in September
Eichorn, IL

Average rainfall in September - Eichorn, IL
  • Average rainfall in September: 1.57"

The wettest month (with the highest rainfall) is April (4.8").
The driest month (with the least rainfall) is September (1.57").

Average rainfall days in September
Eichorn, IL

Average rainfall days in September - Eichorn, IL
  • Average rainfall days in September: 10.5 days

The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is November (9.7 days).

Average snowfall in September
Eichorn, IL

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

The month with the highest snowfall is January (1.73").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Eichorn, IL

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

The month with the highest number of snowfall days is January (5.3 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
Eichorn, IL

Average daylight in September / Average sunshine in September - Eichorn, IL
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

Average sunshine days in September
Eichorn, IL

Average sunshine days in September - Eichorn, IL
  • Average sunshine days in September: 17.1 days

The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is May (9.9 days).

Average UV index in September
Eichorn, IL

Average UV index in September - Eichorn, IL
  • Average UV index in September: 5

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in September
Eichorn, IL

Average cloud cover in September - Eichorn, IL
  • Average cloud cover in September: 28

The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are June and September (Cloud cover 28).

Average visibility in September
Eichorn, IL

Average visibility in September - Eichorn, IL
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Eichorn, Illinois, USA

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