September weather forecast
Rockport, AR

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Weather in September

September, the first month of the autumn in Rockport, is still a warm month, with temperature in the range of an average low of 64.8°F (18.2°C) and an average high of 85.5°F (29.7°C).

Temperature

With the arrival of September, Rockport experiences a modest decline in average high-temperatures, transitioning from a tropical 91.4°F (33°C) in August to a warm 85.5°F (29.7°C). In Rockport, September's nights observe an average temperature dip to a refreshing 64.8°F (18.2°C).

Heat index

The heat index value during September is computed to be a torrid 95°F (35°C). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for 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.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

The months with the lowest humidity are July, September and October, with an average relative humidity of 72%.

Rainfall

September is the month with the least rainfall. Rain falls for 13.4 days and accumulates 2.24" (57mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in September is 12h and 23min.
On the first day of the month, sunrise is at 6:45 am and sunset at 7:37 pm. On the last day of September, sunrise is at 7:05 am and sunset at 6:56 pm CDT.

Sunshine

The average sunshine in September is 9.5h.

UV index

In Rockport, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.

Frequently asked questions

Is it hot in Rockport during September?

The average high-temperature, in September, in Rockport, is 85.5°F (29.7°C), while the average low-temperature is 64.8°F (18.2°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is computed to be 95°F (35°C).

What is the least humid month?

The months with the lowest humidity are July, September and October, with an average relative humidity of 72%.

What is the average humidity in September?

In September, the average relative humidity in Rockport is 72%.

What is the driest month?

September is the month with the least rainfall in Rockport. Rain falls for 13.4 days and accumulates 2.24" (57mm) of precipitation.

How much does it rain in Rockport in September?

In Rockport, Arkansas, in September, it is raining for 13.4 days, with typically 2.24" (57mm) of accumulated precipitation.

When it does not snow in Rockport?

April through October are months without snowfall.

What is the average length of the day in September?

In Rockport, the average day length in September is 12h and 23min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:45 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:56 pm CDT.

How long on average sun shines in September?

In Rockport, the average sunshine duration in September is 9.5h.

How high is the UV index in September?

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk 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
Rockport, AR

Average temperature in September - Rockport, AR
  • Average high temperature in September: 85.5°F

The warmest month (with the highest average high temperature) is July (92.1°F).
The month with the lowest average high temperature is January (49.6°F).

  • Average low temperature in September: 64.8°F

The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (33.6°F).

Average pressure in September
Rockport, AR

Average pressure in September - Rockport, 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
Rockport, AR

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

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity in September
Rockport, AR

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

The month with the highest relative humidity is March (80%).
The months with the lowest relative humidity are July, September and October (72%).

Average rainfall in September
Rockport, AR

Average rainfall in September - Rockport, AR
  • Average rainfall in September: 2.24"

The wettest month (with the highest rainfall) is April (4.53").
The driest month (with the least rainfall) is September (2.24").

Average rainfall days in September
Rockport, AR

Average rainfall days in September - Rockport, AR
  • Average rainfall days in September: 13.4 days

The month with the highest number of rainy days is August (18.3 days).
The month with the least rainy days is November (10.2 days).

Average snowfall in September
Rockport, AR

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

The month with the highest snowfall is February (0.91").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Rockport, AR

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

The month with the highest number of snowfall days is February (1.8 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
Rockport, AR

Average daylight in September / Average sunshine in September - Rockport, 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 months with the most sunshine are June, July and August (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).

Average sunshine days in September
Rockport, AR

Average sunshine days in September - Rockport, AR
  • Average sunshine days in September: 13.9 days

The month with the most sunshine days is January (18.6 days).
The month with the least sunshine days is August (10 days).

Average UV index in September
Rockport, AR

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

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
Rockport, AR

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

The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June and September (Cloud cover 28).

Average visibility in September
Rockport, AR

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

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

Rockport, Arkansas, USA

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