September weather forecast
Curtis, AR

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Weather in September

September, the first month of the autumn in Curtis, is still a hot month, with an average temperature ranging between max 87.3°F (30.7°C) and min 65.5°F (18.6°C).

Temperature

In Curtis, the average high-temperature in September gently drops from a tropical 93.2°F (34°C) in August to a still hot 87.3°F (30.7°C). Curtis marks a considerable descent from the daytime apex, as the average temperature dips to a comfortable 65.5°F (18.6°C) at night throughout September.

Heat index

The heat index for September is calculated to be a sweltering 98.6°F (37°C). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

The months with the lowest humidity are July through October, with an average relative humidity of 71%.

Rainfall

The month with the least rainfall is September, when the rain falls for 10.2 days and typically collects 1.26" (32mm) of precipitation.

Snowfall

April through December are months without snowfall.

Daylight

The average length of the day in September is 12h and 22min.
On the first day of September, sunrise is at 6:46 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:57 pm CDT.

Sunshine

In Curtis, the average sunshine in September is 9.5h.

UV index

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Updated: Aug 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during September?

The high-temperature during September is 87.3°F (30.7°C) and the low-temperature is 65.5°F (18.6°C). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is calculated to be 98.6°F (37°C).

What are the least humid months?

The months with the lowest humidity are July through October, with an average relative humidity of 71%.

What is the average humidity in September?

The average relative humidity in September is 71%.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 10.2 days and typically collects 1.26" (32mm) of precipitation.

How much does it rain in September?

In Curtis, in September, during 10.2 rainfall days, 1.26" (32mm) of precipitation is typically accumulated.

When it does not snow?

In Curtis, snow does not fall in April through December.

How many hours of daylight does Curtis have 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 6:46 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:57 pm CDT.

How many hours of sunshine does Curtis have in September?

The average sunshine duration in September is 9.5h.

What is the UV index reading in September?

In Curtis, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health threat 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
Curtis, AR

Average temperature in September - Curtis, 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 (51.3°F).

  • Average low temperature in September: 65.5°F

The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).

Average pressure in September
Curtis, AR

Average pressure in September - Curtis, 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
Curtis, AR

Average wind speed in September - Curtis, AR
  • Average wind speed in September: 5mph

The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity in September
Curtis, AR

Average humidity in September - Curtis, AR
  • Average humidity in September: 71%

The months with the highest relative humidity are February, March and December (80%).
The months with the lowest relative humidity are July, August, September and October (71%).

Average rainfall in September
Curtis, AR

Average rainfall in September - Curtis, AR
  • Average rainfall in September: 1.26"

The wettest month (with the highest rainfall) is April (3.39").
The driest month (with the least rainfall) is September (1.26").

Average rainfall days in September
Curtis, AR

Average rainfall days in September - Curtis, AR
  • Average rainfall days in September: 10.2 days

The month with the highest number of rainy days is July (14.2 days).
The month with the least rainy days is October (8.5 days).

Average snowfall in September
Curtis, AR

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

The month with the highest snowfall is February (0.35").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September
Curtis, AR

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

The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October and December (0 days).

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

Average daylight in September / Average sunshine in September - Curtis, 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 3min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

Average sunshine days in September
Curtis, AR

Average sunshine days in September - Curtis, AR
  • Average sunshine days in September: 17.8 days

The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is August (14.1 days).

Average UV index in September
Curtis, AR

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

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

Average cloud cover in September
Curtis, AR

Average cloud cover in September - Curtis, AR
  • Average cloud cover in September: 28

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 28).

Average visibility in September
Curtis, AR

Average visibility in September - Curtis, 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).

Curtis, Arkansas, USA

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