January weather forecast and climate
Slidell, LA

Weather in January

January, like December, is a moderate winter month in Slidell, Louisiana, with average temperature fluctuating between 59.4°F (15.2°C) and 45.1°F (7.3°C).

Temperature

With an average high-temperature of 59.4°F (15.2°C) and an average low-temperature of 45.1°F (7.3°C), January is the coldest month.

Humidity

In Slidell, Louisiana, the average relative humidity in January is 75%.

Rainfall

In Slidell, during January, the rain falls for 9.9 days and regularly aggregates up to 1.73" (44mm) of precipitation. In Slidell, during the entire year, the rain falls for 173.3 days and collects up to 30.79" (782mm) of precipitation.

Snowfall

The only month with snowfall in Slidell is January. January is the month with the most snowfall. Snow falls for 0.3 days and accumulates 0.2" (5mm) of snow.

Daylight

In January, the average length of the day is 10.5h.

Sunshine

In Slidell, the average sunshine in January is 5.7h.

UV index

The average daily maximum UV index in January is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the coldest month in Slidell?

The coldest month in Slidell, Louisiana, is January, with an average high-temperature of 59.4°F (15.2°C) and an average low-temperature of 45.1°F (7.3°C).

What is the temperature in January in Slidell?

In January, the average high-temperature is 59.4°F (15.2°C), and the average low-temperature is 45.1°F (7.3°C).

What is the average humidity in January in Slidell?

In January, the average relative humidity in Slidell is 75%.

How much does it rain in Slidell in January?

In Slidell, during January, the rain falls for 9.9 days and regularly aggregates up to 1.73" (44mm) of precipitation.

When does it start snowing in Slidell?

January is the first month it typically snows in Slidell. Throughout January, in the average 0.3 snowfall days, it receives 0.2" (5mm) of snow.

What is the snowiest month in Slidell?

January is the month with the most snowfall in Slidell, Louisiana. Snow falls for 0.3 days and accumulates 0.2" (5mm) of snow.

How many hours of daylight does Slidell have in January?

In Slidell, the average length of the day in January is 10.5h.

How many hours of sunshine does Slidell have in January?

In Slidell, the average sunshine in January is 5.7h.

What is the UV index intensity in January in Slidell?

In January, the average daily maximum UV index in Slidell, Louisiana, is 4. A UV Index of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV rays.

Average temperature in January
Slidell, LA

Average temperature in January - Slidell, LA
  • Average high temperature in January: 59.4°F

The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is January (59.4°F).

  • Average low temperature in January: 45.1°F

The month with the highest average low temperature is August (77.4°F).
The coldest month (with the lowest average low temperature) is January (45.1°F).

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Average pressure in January
Slidell, LA

Average pressure in January - Slidell, LA
  • Average pressure in January: 30.17"

The month with the highest atmospheric pressure is January (30.17").
Months with the lowest atmospheric pressure are June and August (29.97").

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Average wind speed in January
Slidell, LA

Average wind speed in January - Slidell, LA
  • Average wind speed in January: 7.6mph

The windiest month (with the highest average wind speed) is April (8mph).
The calmest month (with the lowest average wind speed) is July (5.4mph).

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Average humidity in January
Slidell, LA

Average humidity in January - Slidell, LA
  • Average humidity in January: 75%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in January
Slidell, LA

Average rainfall in January - Slidell, LA
  • Average rainfall in January: 1.73"

The wettest month (with the highest rainfall) is August (4.92").
The driest month (with the least rainfall) is November (1.5").

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Average rainfall days in January
Slidell, LA

Average rainfall days in January - Slidell, LA
  • Average rainfall days in January: 9.9 days

The month with the highest number of rainy days is August (23.5 days).
The month with the least rainy days is November (8 days).

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Average snowfall in January
Slidell, LA

Average snowfall in January - Slidell, LA
  • Average snowfall in January: 0.2"

The month with the highest snowfall is January (0.2").
Months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in January
Slidell, LA

Average snowfall days in January - Slidell, LA
  • Average snowfall days in January: 0.3 days

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

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Average daylight in January /
Average sunshine in January
Slidell, LA

Average daylight in January / Average sunshine in January - Slidell, LA
  • Average daylight in January: 10.5h

The month with the longest days is June (Average daylight: 14.1h).
The month with the shortest days is December (Average daylight: 10.2h).

  • Average sunshine in January: 5.7h

The month with the most sunshine is June (Average sunshine: 11.1h).
The month with the least sunshine is December (Average sunshine: 5.1h).

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Average sunshine days in January
Slidell, LA

Average sunshine days in January - Slidell, LA
  • Average sunshine days in January: 19.8 days

The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is August (5.1 days).

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Average UV index in January
Slidell, LA

Average UV index in January - Slidell, LA
  • Average UV index in January: 4

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 January
Slidell, LA

Average cloud cover in January - Slidell, LA
  • Average cloud cover in January: 37

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 January
Slidell, LA

Average visibility in January - Slidell, LA
  • Average visibility in January: 6mi

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

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