September weather forecast
Castlewood, LA

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Weather in September

September, the first month of the autumn in Castlewood, is still a tropical month, with an average temperature ranging between max 88°F (31.1°C) and min 70°F (21.1°C).

Temperature

As Castlewood, Louisiana, welcomes September, the average high-temperature records at a still hot 88°F (31.1°C), marking an insignificant deviation from the prior month. Castlewood's average low-temperature is measured at an agreeable 70°F (21.1°C) during September.

Heat index

The heat index for September is appraised at a scorching 105.8°F (41°C). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

In Castlewood, the average relative humidity in September is 78%.

Rainfall

In September, in Castlewood, the rain falls for 17.6 days. Throughout September, 2.95" (75mm) of precipitation is accumulated. In Castlewood, during the entire year, the rain falls for 177.1 days and collects up to 36.1" (917mm) of precipitation.

Snowfall

February through November are months without snowfall in Castlewood, Louisiana.

Daylight

The average length of the day in September in Castlewood is 12h and 20min.
On the first day of September in Castlewood, sunrise is at 6:41 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:50 pm CDT.

Sunshine

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

UV index

In September, the average daily maximum UV index in Castlewood, Louisiana, is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
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Frequently asked questions

How hot is it in Castlewood in September?

The average high-temperature and low-temperature during September are 88°F (31.1°C) and 70°F (21.1°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, in September is appraised at 105.8°F (41°C).

What is the average humidity in September in Castlewood?

In September, the average relative humidity is 78%.

How much does it rain in Castlewood in September?

In Castlewood, Louisiana, in September, during 17.6 rainfall days, 2.95" (75mm) of precipitation is typically accumulated.

When it does not snow in Castlewood?

In Castlewood, Louisiana, snow does not fall in February through November.

What is the average length of the day in September in Castlewood?

In September, the average day length is 12h and 20min.

What time are sunrise and sunset in September in Castlewood?

In September, on the first day of the month, sunrise is at 6:41 am and sunset at 7:26 pm. On the last day of the month, in Castlewood, Louisiana, sunrise is at 6:57 am and sunset at 6:50 pm CDT.

How long on average sun shines in September in Castlewood?

The average sunshine duration in September is 9.5h.

How high is the UV index in September in Castlewood?

The average daily maximum UV index in September in Castlewood, Louisiana, is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to 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
Castlewood, LA

Average temperature in September - Castlewood, LA
  • Average high temperature in September: 88°F

The warmest months (with the highest average high temperature) are July and August (91.9°F).
The month with the lowest average high temperature is January (58.6°F).

  • Average low temperature in September: 70°F

The month with the highest average low temperature is August (73.9°F).
The coldest month (with the lowest average low temperature) is January (42.4°F).

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Average pressure in September
Castlewood, LA

Average pressure in September - Castlewood, LA
  • Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.96"Hg).

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Average wind speed in September
Castlewood, LA

Average wind speed in September - Castlewood, LA
  • Average wind speed in September: 4.6mph

The windiest month (with the highest average wind speed) is February (6.6mph).
The calmest month (with the lowest average wind speed) is July (4.4mph).

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Average humidity in September
Castlewood, LA

Average humidity in September - Castlewood, LA
  • Average humidity in September: 78%

The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in September
Castlewood, LA

Average rainfall in September - Castlewood, LA
  • Average rainfall in September: 2.95"

The wettest month (with the highest rainfall) is July (4.72").
The driest month (with the least rainfall) is November (1.77").

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Average rainfall days in September
Castlewood, LA

Average rainfall days in September - Castlewood, LA
  • Average rainfall days in September: 17.6 days

The month with the highest number of rainy days is July (22.5 days).
The month with the least rainy days is November (8.8 days).

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Average snowfall in September
Castlewood, LA

Average snowfall in September - Castlewood, LA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.28").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Castlewood, LA

Average snowfall days in September - Castlewood, LA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

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Average daylight in September /
Average sunshine in September
Castlewood, LA

Average daylight in September / Average sunshine in September - Castlewood, LA
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in September: 9h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

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Average sunshine days in September
Castlewood, LA

Average sunshine days in September - Castlewood, LA
  • Average sunshine days in September: 10.4 days

The month with the most sunshine days is November (19.6 days).
The months with the least sunshine days are July and August (7.3 days).

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Average UV index in September
Castlewood, LA

Average UV index in September - Castlewood, LA
  • Average UV index in September: 6

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

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Average cloud cover in September
Castlewood, LA

Average cloud cover in September - Castlewood, LA
  • Average cloud cover in September: 34

The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 29).

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Average visibility in September
Castlewood, LA

Average visibility in September - Castlewood, LA
  • Average visibility in September: 5mi

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

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Castlewood, Louisiana, USA

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