Climate and monthly weather forecast
Harahan Junction, LA

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Weather in January

January, the same as December, in Harahan Junction, Louisiana, is another refreshing winter month, with an average temperature varying between 60.4°F (15.8°C) and 47.8°F (8.8°C). January is the coldest month, with an average high-temperature of 60.4°F (15.8°C) and an average low-temperature of 47.8°F (8.8°C). Weather in January »

Weather in February

The last month of the winter, February, is a refreshing month in Harahan Junction, Louisiana, with an average temperature varying between 52.5°F (11.4°C) and 64.4°F (18°C). The beginning of February records an average high-temperature of a comfortable 64.4°F (18°C), marking a negligible difference from January's 60.4°F (15.8°C). Weather in February »

Weather in March

The first month of the spring, March, is a pleasant month in Harahan Junction, Louisiana, with temperature in the range of an average low of 57.7°F (14.3°C) and an average high of 70.7°F (21.5°C). As Harahan Junction enters March, the average high-temperature marginally increases from the a comfortable 64.4°F (18°C) of February to a pleasant 70.7°F (21.5°C). Weather in March »

Weather in April

April in Harahan Junction, Louisiana, is a moderately hot spring month, with temperature in the range of an average low of 63.5°F (17.5°C) and an average high of 76.6°F (24.8°C). The onset of April brings a minor temperature shift, with the average high-temperature moving from a pleasant 70.7°F (21.5°C) in March to a warm 76.6°F (24.8°C). Weather in April »

Weather in May

May, the last month of the spring in Harahan Junction, is also a moderately hot month, with an average temperature varying between 70.9°F (21.6°C) and 82.9°F (28.3°C). The onset of May marks a slight increase in the average high-temperature, moving from a moderately hot 76.6°F (24.8°C) in April to a still warm 82.9°F (28.3°C). Weather in May »

Weather in June

The first month of the summer, June, is a hot month in Harahan Junction, Louisiana, with temperature in the range of an average low of 77°F (25°C) and an average high of 88.3°F (31.3°C). Harahan Junction's transition into June is marked by a minor temperature shift, moving from a moderately hot 82.9°F (28.3°C) in May to a tropical 88.3°F (31.3°C). Weather in June »

Weather in July

July, the same as June, in Harahan Junction, Louisiana, is a hot summer month, with an average temperature varying between 78.4°F (25.8°C) and 89.2°F (31.8°C). Harahan Junction's warmest month, July, generally records average temperatures ranging from a high of 89.2°F (31.8°C) to a low of 78.4°F (25.8°C). Throughout July, the heat index is estimated at an extremely hot 107.6°F (42°C). Weather in July »

Weather in August

August, the last month of the summer in Harahan Junction, is another tropical month, with temperature in the range of an average high of 89.1°F (31.7°C) and an average low of 79°F (26.1°C). Harahan Junction's average high-temperature in August sits at a still hot 89.1°F (31.7°C), showing little difference from the previous month. Weather in August »

Weather in September

The first month of the autumn, September, is still a tropical month in Harahan Junction, Louisiana, with an average temperature varying between 86.5°F (30.3°C) and 75.2°F (24°C). With the arrival of September, Harahan Junction's average high-temperature registers at a still tropical 86.5°F (30.3°C), indicating a subtle variation from the previous month. Weather in September »

Weather in October

October, the same as September, is another warm autumn month in Harahan Junction, Louisiana, with an average temperature ranging between min 66.6°F (19.2°C) and max 78.4°F (25.8°C). Harahan Junction's weather subtly changes with the onset of October, barely falling from a tropical 86.5°F (30.3°C) in September to a warm 78.4°F (25.8°C). Weather in October »

Weather in November

November, the last month of the autumn in Harahan Junction, is another pleasant month, with an average temperature ranging between max 68.9°F (20.5°C) and min 56.5°F (13.6°C). Harahan Junction's average high-temperature decreases in November, falling from a warm 78.4°F (25.8°C) in October to a pleasant 68.9°F (20.5°C). Weather in November »

Weather in December

December, the first month of the winter in Harahan Junction, is still a comfortable month, with an average temperature ranging between max 63.3°F (17.4°C) and min 52°F (11.1°C). December marks a gentle change in average high-temperature, declining from November's pleasant 68.9°F (20.5°C) to an enjoyable 63.3°F (17.4°C). Weather in December »
Updated: Jun 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

January, recording an average high temperature of 60.4°F (15.8°C) and a low temperature of 47.8°F (8.8°C), is Harahan Junction's coldest month.

How much does it rain?

Throughout the year, there are 104.1 rainfall days, and 8.39" (213mm) of precipitation is accumulated.

What is the driest month?

March is the month with the least rainfall. Rain falls for 8.1 days and accumulates 0.39" (10mm) of precipitation.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.

When is the highest UV index in Harahan Junction?

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

When are the longest days?

June has the longest days of the year, with an average of 14h and 0min of daylight.

What month has the most sunshine?

The month with the most sunshine is June, with an average of 11h of sunshine.

What is the hottest time of year in Harahan Junction?

Harahan Junction's warmest temperatures are experienced in July, with average high temperatures of 89.2°F (31.8°C) and lows of 78.4°F (25.8°C).

What is the wettest month?

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.

What is the least humid month?

With an average relative humidity of 71%, October is the least humid month in Harahan Junction.

What is the most humid month?

The most humid month is December, with an average relative humidity of 78%.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 10h and 18min of daylight.

What is the month with the least sunshine?

The month with the least sunshine is December, with an average of 5.1h of sunshine.

What is the month with the lowest UV index?

December is the month with the lowest UV index, with an average maximum UV index of 3.

Average temperature
Harahan Junction, LA

Average temperature - Harahan Junction, LA

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).

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).

Average pressure
Harahan Junction, LA

Average pressure - Harahan Junction, LA

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).

Average wind speed
Harahan Junction, LA

Average wind speed - Harahan Junction, LA

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).

Average humidity
Harahan Junction, LA

Average humidity - Harahan Junction, LA

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

Average rainfall
Harahan Junction, LA

Average rainfall - Harahan Junction, LA

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

Average rainfall days
Harahan Junction, LA

Average rainfall days - Harahan Junction, LA

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).

Average daylight / Average sunshine
Harahan Junction, LA

Average daylight / Average sunshine - Harahan Junction, LA

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).

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).

Average sunshine days
Harahan Junction, LA

Average sunshine days - Harahan Junction, LA

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

Average UV index
Harahan Junction, LA

Average UV index - Harahan Junction, LA

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).

Average visibility
Harahan Junction, LA

Average visibility - Harahan Junction, LA

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).

Harahan Junction, Louisiana, USA

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