September weather forecast
Des Arc, MO

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Weather in September

The first month of the autumn, September, is still a warm month in Des Arc, Missouri, with an average temperature fluctuating between 81.3°F (27.4°C) and 60.1°F (15.6°C).

Temperature

During the shift to September, Des Arc records a mild decrease in average high-temperature, moving from a tropical 87.8°F (31°C) in August to a moderately hot 81.3°F (27.4°C). Des Arc witnesses a consistent average low-temperature of 60.1°F (15.6°C) throughout September.

Heat index

For September, the heat index is calculated to be a hot 86°F (30°C). If one continues to be active during enduring exposure, it could result in fatigue and heat cramps.
Remember that heat index calculations are made for conditions in the shade with light wind. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', gauges the sensation of temperature factoring in the air's moisture content. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.

Humidity

In September, the average relative humidity is 74%.

Rainfall

The months with the least rainfall are September and December Rain falls for 10.2 days and accumulates 1.26" (32mm) of rain.

Snowfall

April through October are months without snowfall.

Daylight

In September, the average length of the day is 12h and 25min.
On the first day of September, sunrise is at 6:33 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:46 pm CDT.

Sunshine

In Des Arc, the average sunshine in September is 9.6h.

UV index

In Des Arc, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Updated: Aug 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Des Arc in September?

In September, the average high-temperature and low-temperature are 81.3°F (27.4°C) and 60.1°F (15.6°C) respectively. In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is calculated to be 86°F (30°C).

What is the average humidity in September in Des Arc?

The average relative humidity in September is 74%.

What is the driest month?

The months with the least rainfall are September and December Rain falls for 10.2 days and accumulates 1.26" (32mm) of rain.

How much does it rain in September?

In Des Arc, in September, it is raining for 10.2 days, with typically 1.26" (32mm) of accumulated precipitation.

When it does not snow?

In Des Arc, snow does not fall in April through October.

How many hours of daylight does Des Arc have in September?

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

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:33 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:46 pm CDT.

How many hours of sunshine does Des Arc have in September?

The average sunshine duration in September in Des Arc is 9.6h.

How high is the UV index in September?

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from 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
Des Arc, MO

Average temperature in September - Des Arc, MO
  • Average high temperature in September: 81.3°F

The warmest month (with the highest average high temperature) is July (89.4°F).
The month with the lowest average high temperature is January (41.5°F).

  • Average low temperature in September: 60.1°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 (27.1°F).

Average pressure in September
Des Arc, MO

Average pressure in September - Des Arc, MO
  • Average pressure in September: 30.02"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in September
Des Arc, MO

Average wind speed in September - Des Arc, MO
  • Average wind speed in September: 5.2mph

The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in September
Des Arc, MO

Average humidity in September - Des Arc, MO
  • Average humidity in September: 74%

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September
Des Arc, MO

Average rainfall in September - Des Arc, MO
  • Average rainfall in September: 1.26"

The wettest month (with the highest rainfall) is April (3.03").
The driest months (with the least rainfall) are September and December (1.26").

Average rainfall days in September
Des Arc, MO

Average rainfall days in September - Des Arc, MO
  • Average rainfall days in September: 10.2 days

The month with the highest number of rainy days is July (15.7 days).
The months with the least rainy days are January and December (8.1 days).

Average snowfall in September
Des Arc, MO

Average snowfall in September - Des Arc, MO
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.65").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Des Arc, MO

Average snowfall days in September - Des Arc, MO
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (3.8 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
Des Arc, MO

Average daylight in September / Average sunshine in September - Des Arc, MO
  • 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 4min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in September
Des Arc, MO

Average sunshine days in September - Des Arc, MO
  • Average sunshine days in September: 17.6 days

The month with the most sunshine days is October (21.5 days).
The month with the least sunshine days is July (12 days).

Average UV index in September
Des Arc, MO

Average UV index in September - Des Arc, MO
  • 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
Des Arc, MO

Average cloud cover in September - Des Arc, MO
  • Average cloud cover in September: 30

The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 28).

Average visibility in September
Des Arc, MO

Average visibility in September - Des Arc, MO
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, June, September, October, November and December (6mi).
The months with the lowest visibility are May, July and August (5mi).

Des Arc, Missouri, USA

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