September weather forecast
Cadiz, IL

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Weather in September

The first month of the autumn, September, is still a warm month in Cadiz, Illinois, with an average temperature varying between 60.8°F (16°C) and 79.9°F (26.6°C).

Temperature

Cadiz notes an average high-temperature of a still warm 79.9°F (26.6°C) in September, displaying minor variation from August. Cadiz experiences a steady low-temperature of 60.8°F (16°C) throughout September.

Humidity

In September, the average relative humidity is 73%.

Rainfall

September is the month with the least rainfall. Rain falls for 10.8 days and accumulates 1.14" (29mm) of precipitation.

Snowfall

May through October 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 6:23 am and sunset at 7:21 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:37 pm CDT.

Sunshine

In Cadiz, the average sunshine in September is 9.2h.

UV index

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high daily UV index of 5 during September translates into the following directions:
Take precautions - Protection against skin and eye damage is obliged. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Updated: Jul 15, 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 Cadiz, records 79.9°F (26.6°C), while the low-temperature is 60.8°F (16°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 95°F (35°C).

What is the average humidity in September in Cadiz?

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

What is the driest month?

September is the month with the least rainfall. Rain falls for 10.8 days and accumulates 1.14" (29mm) of precipitation.

How much does it rain in September?

In Cadiz, in September, during 10.8 rainfall days, 1.14" (29mm) of precipitation is typically accumulated.

When it does not snow?

May through October are months without snowfall.

What is the average length of the day 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 6:23 am and sunset at 7:21 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:37 pm CDT.

How many hours of sunshine does Cadiz have in September?

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

How high is the UV index in September?

In Cadiz, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to 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
Cadiz, IL

Average temperature in September - Cadiz, IL
  • Average high temperature in September: 79.9°F

The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in September: 60.8°F

The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).

Average pressure in September
Cadiz, IL

Average pressure in September - Cadiz, 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 (29.95"Hg).

Average wind speed in September
Cadiz, IL

Average wind speed in September - Cadiz, IL
  • Average wind speed in September: 6.5mph

The windiest month (with the highest average wind speed) is February (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

Average humidity in September
Cadiz, IL

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

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (70%).

Average rainfall in September
Cadiz, IL

Average rainfall in September - Cadiz, IL
  • Average rainfall in September: 1.14"

The wettest month (with the highest rainfall) is April (3.27").
The driest month (with the least rainfall) is September (1.14").

Average rainfall days in September
Cadiz, IL

Average rainfall days in September - Cadiz, IL
  • Average rainfall days in September: 10.8 days

The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is November (9 days).

Average snowfall in September
Cadiz, IL

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

The month with the highest snowfall is February (0.87").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Cadiz, IL

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

The month with the highest number of snowfall days is January (4.8 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
Cadiz, IL

Average daylight in September / Average sunshine in September - Cadiz, 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 July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

Average sunshine days in September
Cadiz, IL

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

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is May (11.2 days).

Average UV index in September
Cadiz, IL

Average UV index in September - Cadiz, 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
Cadiz, IL

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

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 27).

Average visibility in September
Cadiz, IL

Average visibility in September - Cadiz, 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).

Cadiz, Illinois, USA

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