September weather forecast
Sims, AR

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Sims, Arkansas, with an average temperature ranging between min 63°F (17.2°C) and max 83.7°F (28.7°C).

Temperature

September reveals a small adjustment in temperature, transitioning from an average high of a hot 90.1°F (32.3°C) in August to a warm 83.7°F (28.7°C). September nights cool down to an average low-temperature of 63°F (17.2°C).

Heat index

The average heat index in September is evaluated at a hot 91.4°F (33°C). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', gives a temperature feeling by integrating air temperature and humidity. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.

Humidity

The months with the lowest humidity are July through October, with an average relative humidity of 73%.

Rainfall

In Sims, in September, it is raining for 13.2 days, with typically 2.72" (69mm) of accumulated precipitation. Throughout the year, in Sims, Arkansas, there are 160.2 rainfall days, and 38.86" (987mm) of precipitation is accumulated.

Snowfall

In Sims, snow does not fall in April through October.

Daylight

In September, the average length of the day in Sims is 12h and 23min.
On the first day of the month, sunrise is at 6:48 am and sunset at 7:40 pm. On the last day of September, sunrise is at 7:09 am and sunset at 6:59 pm CDT.

Sunshine

In Sims, 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 average person.
Note: A maximum UV index of 5 in September translates into the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Updated: Jul 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during September?

The high-temperature, in September, in Sims, records 83.7°F (28.7°C), while the low-temperature is 63°F (17.2°C). The average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, in September is evaluated at 91.4°F (33°C).

What is the least humid month?

The months with the lowest humidity are July through October, with an average relative humidity of 73%.

What is the average humidity in September?

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

How many days does it rain in September in Sims?

In September, the rain falls for 13.2 days. Throughout September, 2.72" (69mm) of precipitation is accumulated.

When it does not snow?

April through October are months without snowfall.

What is the average length of the day in September?

The average day length in September is 12h and 23min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:48 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:59 pm CDT.

How many hours of sunshine does Sims have in September?

In September, the average sunshine duration is 9.2h.

What is the UV index reading 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 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
Sims, AR

Average temperature in September - Sims, AR
  • Average high temperature in September: 83.7°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (48.7°F).

  • Average low temperature in September: 63°F

The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).

Average pressure in September
Sims, AR

Average pressure in September - Sims, AR
  • Average pressure in September: 30"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
Sims, AR

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

The windiest month (with the highest average wind speed) is April (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity in September
Sims, AR

Average humidity in September - Sims, AR
  • Average humidity in September: 73%

The month with the highest relative humidity is March (80%).
The months with the lowest relative humidity are July, August, September and October (73%).

Average rainfall in September
Sims, AR

Average rainfall in September - Sims, AR
  • Average rainfall in September: 2.72"

The wettest month (with the highest rainfall) is May (4.76").
The driest month (with the least rainfall) is January (2.32").

Average rainfall days in September
Sims, AR

Average rainfall days in September - Sims, AR
  • Average rainfall days in September: 13.2 days

The month with the highest number of rainy days is August (17.7 days).
The month with the least rainy days is January (9.6 days).

Average snowfall in September
Sims, AR

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

The month with the highest snowfall is February (1.46").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Sims, AR

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

The month with the highest number of snowfall days is February (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
Sims, AR

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

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The months with the least sunshine are February and December (Average sunshine: 5h and 6min).

Average sunshine days in September
Sims, AR

Average sunshine days in September - Sims, AR
  • Average sunshine days in September: 14.2 days

The month with the most sunshine days is January (19 days).
The month with the least sunshine days is August (10.5 days).

Average UV index in September
Sims, AR

Average UV index in September - Sims, AR
  • Average UV index in September: 5

The month with the highest UV index is June (UV index 7).
The month with the lowest UV index is December (UV index 2).

Average cloud cover in September
Sims, AR

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

The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are June, July, August and September (Cloud cover 30).

Average visibility in September
Sims, AR

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

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

Sims, Arkansas, USA

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