July weather forecast
Jefferson, LA

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Weather in July

July, the same as June, in Jefferson, Louisiana, is another tropical summer month, with an average temperature fluctuating between 78.4°F (25.8°C) and 89.2°F (31.8°C).

Temperature

In Jefferson, July is identified by the highest average temperatures, reaching a peak of 89.2°F (31.8°C) and a low of 78.4°F (25.8°C).

Heat index

In July, the heat index is computed to be a blisteringly hot 107.6°F (42°C). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
One should consider that heat index numbers are for shaded settings and light wind. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', melds the effects of warmth and moisture to generate a feeling of heat. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

In Jefferson, the average relative humidity in July is 75%.

Rainfall

The month with the most rainfall in Jefferson is July, when the rain falls for 13.3 days and typically aggregates up to 1.3" (33mm) of precipitation.

Daylight

In July, the average length of the day is 13h and 51min.
On the first day of the month, sunrise is at 6:03 am and sunset at 8:05 pm. On the last day of July, sunrise is at 6:19 am and sunset at 7:54 pm CDT.

Sunshine

In July, the average sunshine in Jefferson is 10.6h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum high UV index of 7 in July translates into the following recommendations:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
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Frequently asked questions

What is the warmest month in Jefferson?

In Jefferson, Louisiana, the average highest temperatures are observed in July, with a high of 89.2°F (31.8°C) and a low of 78.4°F (25.8°C).

Is it hot in Jefferson during July?

The average high-temperature, in July, in Jefferson, is 89.2°F (31.8°C), while the average low-temperature is 78.4°F (25.8°C). In July, the average heat index (a.k.a. 'feels like', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 107.6°F (42°C).

What is the average humidity in July in Jefferson?

In July, the average relative humidity is 75%.

What is the wettest month in Jefferson?

The month with the most rainfall is July, when the rain falls for 13.3 days and typically aggregates up to 1.3" (33mm) of precipitation.

How many days does it rain in July in Jefferson?

In Jefferson, Louisiana, in July, during 13.3 rainfall days, 1.3" (33mm) of precipitation is typically accumulated.

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

In July, the average day length in Jefferson is 13h and 51min.

When is the sunrise / sunset in July in Jefferson?

On the first day of July in Jefferson, sunrise is at 6:03 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 7:54 pm CDT.

How many hours of sunshine does Jefferson have in July?

In Jefferson, the average sunshine duration in July is 10.6h.

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

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

What is the UV index reading in July in Jefferson?

In Jefferson, Louisiana, the average daily maximum UV index in July is 7. A UV Index value of 6 to 7 symbolizes a high health threat 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 July
Jefferson, LA

Average temperature in July - Jefferson, LA
  • Average high temperature in July: 89.2°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 July: 78.4°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 July
Jefferson, LA

Average pressure in July - Jefferson, LA
  • Average pressure in July: 30.01"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 July
Jefferson, LA

Average wind speed in July - Jefferson, LA
  • Average wind speed in July: 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 July
Jefferson, LA

Average humidity in July - Jefferson, LA
  • Average humidity in July: 75%

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 July
Jefferson, LA

Average rainfall in July - Jefferson, LA
  • Average rainfall in July: 1.3"

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 July
Jefferson, LA

Average rainfall days in July - Jefferson, LA
  • Average rainfall days in July: 13.3 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 July /
Average sunshine in July
Jefferson, LA

Average daylight in July / Average sunshine in July - Jefferson, LA
  • Average daylight in July: 13h and 5min

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 July: 10h and 4min

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 July
Jefferson, LA

Average sunshine days in July - Jefferson, LA
  • Average sunshine days in July: 11.8 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 July
Jefferson, LA

Average UV index in July - Jefferson, LA
  • Average UV index in July: 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 July
Jefferson, LA

Average cloud cover in July - Jefferson, LA
  • Average cloud cover in July: 28

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 July
Jefferson, LA

Average visibility in July - Jefferson, LA
  • Average visibility in July: 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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