September weather forecast
Calion, AR

Share

Weather in September

The first month of the autumn, September, is also a hot month in Calion, Arkansas, with temperature in the range of an average low of 65.8°F (18.8°C) and an average high of 87.3°F (30.7°C).

Temperature

September sees a slight reduction in average high-temperature, with a shift from a tropical 93.2°F (34°C) in August to a still hot 87.3°F (30.7°C). In Calion, in September, the average low-temperature is an enjoyable 65.8°F (18.8°C).

Heat index

For most parts of September, the heat index is estimated at a very hot 98.6°F (37°C). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

The average relative humidity in September is 72%.

Rainfall

In Calion, in September, it is raining for 11 days, with typically 2.32" (59mm) of accumulated precipitation. In Calion, Arkansas, during the entire year, the rain falls for 147.8 days and collects up to 35.47" (901mm) of precipitation.

Snowfall

In Calion, snow does not fall in April through November.

Daylight

In September, the average length of the day is 12h and 22min.
On the first day of September, sunrise is at 6:44 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 6:55 pm CDT.

Sunshine

The average sunshine in September is 9.4h.

UV index

In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Updated: Jul 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in September?

The average high-temperature, in September, in Calion, is 87.3°F (30.7°C), while the average low-temperature is 65.8°F (18.8°C). In September, the average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, is estimated at 98.6°F (37°C).

What is the average humidity in September?

In September, the average relative humidity is 72%.

How much does it rain in September?

In Calion, in September, during 11 rainfall days, 2.32" (59mm) of precipitation is typically accumulated.

When it does not snow?

In Calion, snow does not fall in April through November.

What is the average length of the day in September?

The average day length in September is 12h and 22min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:44 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 6:55 pm CDT.

How long on average sun shines in September?

In September, the average sunshine duration is 9.4h.

How high is the UV index in September?

In September, the average daily maximum UV index in Calion is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability 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
Calion, AR

Average temperature in September - Calion, AR
  • Average high temperature in September: 87.3°F

The warmest month (with the highest average high temperature) is July (93.7°F).
The month with the lowest average high temperature is January (51.8°F).

  • Average low temperature in September: 65.8°F

The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (36.5°F).

Average pressure in September
Calion, AR

Average pressure in September - Calion, AR
  • Average pressure in September: 29.99"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in September
Calion, AR

Average wind speed in September - Calion, AR
  • Average wind speed in September: 4.9mph

The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in September
Calion, AR

Average humidity in September - Calion, AR
  • Average humidity in September: 72%

The months with the highest relative humidity are February and December (81%).
The months with the lowest relative humidity are July, August and October (71%).

Average rainfall in September
Calion, AR

Average rainfall in September - Calion, AR
  • Average rainfall in September: 2.32"

The wettest month (with the highest rainfall) is April (4.53").
The driest month (with the least rainfall) is July (2.17").

Average rainfall days in September
Calion, AR

Average rainfall days in September - Calion, AR
  • Average rainfall days in September: 11 days

The month with the highest number of rainy days is March (15.1 days).
The month with the least rainy days is November (8.9 days).

Average snowfall in September
Calion, AR

Average snowfall in September - Calion, AR
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.39").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Calion, AR

Average snowfall days in September - Calion, AR
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Calion, AR

Average daylight in September / Average sunshine in September - Calion, AR
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in September: 9h and 2min

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

Average sunshine days in September
Calion, AR

Average sunshine days in September - Calion, AR
  • Average sunshine days in September: 17.3 days

The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is March (13.8 days).

Average UV index in September
Calion, AR

Average UV index in September - Calion, AR
  • Average UV index in September: 6

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).

Average cloud cover in September
Calion, AR

Average cloud cover in September - Calion, AR
  • Average cloud cover in September: 30

The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are June, July and August (Cloud cover 28).

Average visibility in September
Calion, AR

Average visibility in September - Calion, AR
  • Average visibility in September: 6mi

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

Calion, Arkansas, USA

Weather forecast for your location

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