August weather forecast
Old Jefferson, LA

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Weather in August

The last month of the summer, August, is another tropical month in Old Jefferson, Louisiana, with an average temperature fluctuating between 74.7°F (23.7°C) and 91.2°F (32.9°C).

Temperature

Upon the onset of August, Old Jefferson witnesses an average high-temperature of a still tropical 91.2°F (32.9°C), showing a close resemblance to the prior month. Nightly temperatures in Old Jefferson, Louisiana, drop to an average low of 74.7°F (23.7°C) in August.

Heat index

In August, the average heat index is evaluated at a blazing hot 116.6°F (47°C). Stay wary: Heat exhaustion and heat cramps are possible. Heatstroke can ensue from extended effort.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In August, the average relative humidity in Old Jefferson is 78%.

Rainfall

In August, the rain falls for 23.8 days. Throughout August, 5.16" (131mm) of precipitation is accumulated. In Old Jefferson, during the entire year, the rain falls for 187.5 days and collects up to 40" (1016mm) of precipitation.

Snowfall

In Old Jefferson, snow does not fall in February through November.

Daylight

In Old Jefferson, the average length of the day in August is 13h and 13min.
On the first day of August in Old Jefferson, sunrise is at 6:22 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 7:27 pm CDT.

Sunshine

In August, the average sunshine is 10.1h.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: In August, a daily UV index of 7 turns into the following recommendations:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
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Frequently asked questions

How hot is it in Old Jefferson in August?

The average high-temperature and low-temperature in Old Jefferson, Louisiana, during August are 91.2°F (32.9°C) and 74.7°F (23.7°C) respectively. In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 116.6°F (47°C).

What is the average humidity in August in Old Jefferson?

In August, the average relative humidity in Old Jefferson is 78%.

How many days does it rain in August in Old Jefferson?

In Old Jefferson, in August, it is raining for 23.8 days, with typically 5.16" (131mm) of accumulated precipitation.

When it does not snow in Old Jefferson?

February through November are months without snowfall.

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

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

What time are sunrise and sunset in August in Old Jefferson?

On the first day of August in Old Jefferson, Louisiana, sunrise is at 6:22 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 7:27 pm CDT.

How many hours of sunshine does Old Jefferson have in August?

In August, the average sunshine duration in Old Jefferson is 10.1h.

What is the month with the highest UV index in Old Jefferson?

May through August, with an average maximum UV index of 7, are months with the highest UV index in Old Jefferson.

What is the UV index intensity in August in Old Jefferson?

The average daily maximum UV index in August in Old Jefferson is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from unsafe 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 August
Old Jefferson, LA

Average temperature in August - Old Jefferson, LA
  • Average high temperature in August: 91.2°F

The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is January (59°F).

  • Average low temperature in August: 74.7°F

The month with the highest average low temperature is August (74.7°F).
The coldest month (with the lowest average low temperature) is January (43.2°F).

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Average pressure in August
Old Jefferson, LA

Average pressure in August - Old Jefferson, LA
  • Average pressure in August: 29.96"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 August
Old Jefferson, LA

Average wind speed in August - Old Jefferson, LA
  • Average wind speed in August: 4.5mph

The windiest month (with the highest average wind speed) is February (6.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

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Average humidity in August
Old Jefferson, LA

Average humidity in August - Old Jefferson, LA
  • Average humidity in August: 78%

The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in August
Old Jefferson, LA

Average rainfall in August - Old Jefferson, LA
  • Average rainfall in August: 5.16"

The wettest month (with the highest rainfall) is July (5.47").
The driest month (with the least rainfall) is November (1.93").

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Average rainfall days in August
Old Jefferson, LA

Average rainfall days in August - Old Jefferson, LA
  • Average rainfall days in August: 23.8 days

The month with the highest number of rainy days is August (23.8 days).
The month with the least rainy days is November (8.9 days).

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Average snowfall in August
Old Jefferson, LA

Average snowfall in August - Old Jefferson, LA
  • Average snowfall in August: 0"

The month with the highest snowfall is January (0.2").
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 August
Old Jefferson, LA

Average snowfall days in August - Old Jefferson, LA
  • Average snowfall days in August: 0 days

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

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

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

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 August: 10h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

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Average sunshine days in August
Old Jefferson, LA

Average sunshine days in August - Old Jefferson, LA
  • Average sunshine days in August: 6.3 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (5.9 days).

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Average UV index in August
Old Jefferson, LA

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

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

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Average cloud cover in August
Old Jefferson, LA

Average cloud cover in August - Old Jefferson, LA
  • Average cloud cover in August: 32

The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 27).

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Average visibility in August
Old Jefferson, LA

Average visibility in August - Old Jefferson, LA
  • Average visibility in August: 5mi

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

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Old Jefferson, Louisiana, USA

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