August weather forecast
Jefferson, LA

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Weather in August

The last month of the summer, August, is also a hot month in Jefferson, Louisiana, with an average temperature varying between 89.1°F (31.7°C) and 79°F (26.1°C).

Temperature

August welcomes an average high-temperature of a still hot 89.1°F (31.7°C), not much different from the preceding month. The average temperature in Jefferson during August nights dips to a warm 79°F (26.1°C).

Heat index

The heat index for August is computed to be a blisteringly hot 105.8°F (41°C). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', quantifies the warmth felt when relative humidity is considered. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

In August, the average relative humidity is 74%.

Rainfall

In Jefferson, in August, it is raining for 14.8 days, with typically 1.14" (29mm) of accumulated precipitation. In Jefferson, Louisiana, during the entire year, the rain falls for 104.1 days and collects up to 8.39" (213mm) of precipitation.

Daylight

In August, the average length of the day in Jefferson, Louisiana, is 13h and 11min.
On the first day of the month, sunrise is at 6:20 am and sunset at 7:53 pm. On the last day of August, sunrise is at 6:37 am and sunset at 7:23 pm CDT.

Sunshine

In August, the average sunshine is 10.8h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: A typical high UV index of 7 in August suggests the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
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Frequently asked questions

How hot is August in Jefferson?

In August, in Jefferson, the average high-temperature is 89.1°F (31.7°C), and the average low-temperature is 79°F (26.1°C). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is computed to be 105.8°F (41°C).

What is the average humidity in August in Jefferson?

In August, the average relative humidity in Jefferson, Louisiana, is 74%.

How much does it rain in Jefferson in August?

In Jefferson, Louisiana, in August, during 14.8 rainfall days, 1.14" (29mm) of precipitation is typically accumulated.

What is the average length of the day in August in Jefferson?

The average day length in August is 13h and 11min.

When are sunrise and sunset in August in Jefferson?

In August, on the first day of the month, sunrise is at 6:20 am and sunset at 7:53 pm. On the last day of the month, in Jefferson, Louisiana, sunrise is at 6:37 am and sunset at 7:23 pm CDT.

How long on average sun shines in August in Jefferson?

In Jefferson, Louisiana, the average sunshine duration in August is 10.8h.

When is the highest UV index in Jefferson?

The months with the highest UV index are May through September, with an average maximum UV index of 7.

How high is the UV index in August in Jefferson?

In August, the average daily maximum UV index in Jefferson, Louisiana, is 7. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Jefferson, LA

Average temperature in August - Jefferson, LA
  • Average high temperature in August: 89.1°F

The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (60.4°F).

  • Average low temperature in August: 79°F

The month with the highest average low temperature is August (79°F).
The coldest month (with the lowest average low temperature) is January (47.8°F).

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Average pressure in August
Jefferson, LA

Average pressure in August - Jefferson, LA
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.97"Hg).

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Average wind speed in August
Jefferson, LA

Average wind speed in August - Jefferson, LA
  • Average wind speed in August: 6.5mph

The windiest months (with the highest average wind speed) are February and April (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).

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Average humidity in August
Jefferson, LA

Average humidity in August - Jefferson, LA
  • Average humidity in August: 74%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in August
Jefferson, LA

Average rainfall in August - Jefferson, LA
  • Average rainfall in August: 1.14"

The wettest month (with the highest rainfall) is July (1.3").
The driest month (with the least rainfall) is March (0.39").

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Average rainfall days in August
Jefferson, LA

Average rainfall days in August - Jefferson, LA
  • Average rainfall days in August: 14.8 days

The month with the highest number of rainy days is August (14.8 days).
The month with the least rainy days is November (4.5 days).

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Average daylight in August /
Average sunshine in August
Jefferson, LA

Average daylight in August / Average sunshine in August - Jefferson, LA
  • Average daylight in August: 13h and 1min

The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).

  • Average sunshine in August: 10h and 5min

The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

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Average sunshine days in August
Jefferson, LA

Average sunshine days in August - Jefferson, LA
  • Average sunshine days in August: 10.3 days

The month with the most sunshine days is November (24.6 days).
The month with the least sunshine days is August (10.3 days).

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Average UV index in August
Jefferson, LA

Average UV index in August - Jefferson, LA
  • Average UV index in August: 7

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

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Average cloud cover in August
Jefferson, LA

Average cloud cover in August - Jefferson, LA
  • Average cloud cover in August: 27

The month with the most cloud cover is December (Cloud cover 45).
The month with the least cloud cover is October (Cloud cover 24).

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Average visibility in August
Jefferson, LA

Average visibility in August - Jefferson, LA
  • Average visibility in August: 6mi

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

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Jefferson, Louisiana, USA

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