September weather forecast
Muddy, IL

Share

Weather in September

The first month of the autumn, September, is also a moderately hot month in Muddy, Illinois, with an average temperature fluctuating between 80.8°F (27.1°C) and 60.4°F (15.8°C).

Temperature

Muddy's weather in September, with an average high-temperature of a still warm 80.8°F (27.1°C), subtly shifts from August's 85.6°F (29.8°C). The average low-temperature of 60.4°F (15.8°C) is witnessed in Muddy during September.

Heat index

For most parts of September, the heat index is appraised at 84.2°F (29°C). When exposure and activity are sustained, they could induce fatigue, with a chance of heat cramps.
In terms of the heat index, values are set with light wind and shade conditions in mind. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.

Humidity

The average relative humidity in September is 73%.

Rainfall

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

Snowfall

In Muddy, Illinois, snow does not fall in May through September.

Daylight

In Muddy, the average length of the day in September is 12h and 25min.
On the first day of September in Muddy, sunrise is at 6:24 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:38 pm CDT.

Sunshine

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

UV index

In Muddy, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A daily high UV index of 5 in September leads to these guidelines:
Put precautions into practice - Guidance to elude sunburn is provided. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature in Muddy?

In September, in Muddy, the average high-temperature is 80.8°F (27.1°C), and the average low-temperature is 60.4°F (15.8°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, in September is appraised at 84.2°F (29°C).

What is the average humidity in September in Muddy?

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

What is the driest month in Muddy?

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

How much does it rain in Muddy in September?

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

When it does not snow in Muddy?

May through September are months without snowfall in Muddy, Illinois.

Does it snow in Muddy in September?

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

How many hours of daylight does Muddy have in September?

The average day length in September in Muddy is 12h and 25min.

When is the sunrise / sunset in September in Muddy?

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, in Muddy, sunrise is at 6:49 am and sunset at 6:38 pm CDT.

How many hours of sunshine does Muddy have in September?

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

How high is the UV index in September in Muddy?

In Muddy, Illinois, the average daily maximum UV index in September is 5. A UV Index reading 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
Muddy, IL

Average temperature in September - Muddy, 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
Muddy, IL

Average pressure in September - Muddy, 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
Muddy, IL

Average wind speed in September - Muddy, 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
Muddy, IL

Average humidity in September - Muddy, 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
Muddy, IL

Average rainfall in September - Muddy, 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
Muddy, IL

Average rainfall days in September - Muddy, 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
Muddy, IL

Average snowfall in September - Muddy, 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
Muddy, IL

Average snowfall days in September - Muddy, 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
Muddy, IL

Average daylight in September / Average sunshine in September - Muddy, 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
Muddy, IL

Average sunshine days in September - Muddy, 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
Muddy, IL

Average UV index in September - Muddy, 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
Muddy, IL

Average cloud cover in September - Muddy, 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
Muddy, IL

Average visibility in September - Muddy, 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).

Muddy, Illinois, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location