September weather forecast and climate
Curtis, AR

Weather in September

September, the first month of the autumn, in Curtis, is still a tropical month, with average temperature varying between 87.3°F (30.7°C) and 65.5°F (18.6°C).

Temperature

In Curtis, the average high-temperature in September slightly decreases, from 93.2°F (34°C) in August, to a still tropical 87.3°F (30.7°C). In Curtis, Arkansas, the average low-temperature is 65.5°F (18.6°C).

Heat index

In September, the average heat index is appraised at a very hot 98.8°F (37.1°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'felt air temperature', 'apparent temperature', or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like activity, pregnancy, wind, and clothing affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

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

Rainfall

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

Snowfall

In Curtis snow does not fall in April through December.

Daylight

In September, the average length of the day in Curtis is 12.4h.

Sunshine

In Curtis, the average sunshine is 9.5h.

UV index

The average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to the UV radiation for the ordinary person.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Curtis?

In Curtis, Arkansas, in September, the average high-temperature is 87.3°F (30.7°C), and the average low-temperature is 65.5°F (18.6°C). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), that calculates temperature value influenced by the moisture in the air, is evaluated at 98.8°F (37.1°C).

What is the least humid month in Curtis?

Months with the lowest humidity in Curtis are July through October, with an average relative humidity of 71%.

What is the average humidity in September in Curtis?

In September, the average relative humidity in Curtis is 71%.

How much does it rain in Curtis in September?

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

What is the driest month in Curtis?

September is the month with the least rainfall in Curtis, Arkansas. Rain falls for 10.2 days and accumulates 1.26" (32mm) of precipitation.

When it does not snow in Curtis?

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

How many hours of daylight does Curtis have in September?

In Curtis, Arkansas, the average length of the day in September is 12.4h.

How long on average sun shines in September in Curtis?

The average sunshine in September in Curtis, Arkansas, is 9.5h.

What is the UV index intensity in September in Curtis?

In Curtis, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV radiation.

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).

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Average pressure in September
Curtis, AR

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

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

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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).

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Average humidity in September
Curtis, AR

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

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

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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").

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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).

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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").
Months with the least snowfall are April, May, June, July, August, September, October, November and December (0").

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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).
Months with the least snowfall days are April, May, June, July, August, September, October and December (0 days).

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

Average daylight in September / Average sunshine in September - Curtis, AR
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in September: 9.5h

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 5h).

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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).

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Average UV index in September
Curtis, AR

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

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).

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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).
Months with the least cloud cover are June, July, August and September (Cloud cover 28).

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Average visibility in September
Curtis, AR

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

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

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