January weather forecast
Slidell, LA

Weather in January

January, like December, is another mild winter month in Slidell, Louisiana, with an average temperature varying between 59.4°F (15.2°C) and 45.1°F (7.3°C).

Temperature

The coldest month 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).

Humidity

The average relative humidity in January in Slidell is 75%.

Rainfall

In Slidell, Louisiana, it is raining for 9.9 days, with typically 1.73" (44mm) of accumulated precipitation. Throughout the year, in Slidell, there are 173.3 rainfall days, and 30.79" (782mm) of precipitation is accumulated.

Snowfall

January is the only month when snow falls. The month with the most snowfall is January, when snow falls for 0.3 days and typically aggregates up to 0.2" (5mm) of snow.

Daylight

The average length of the day in January in Slidell is 10h and 27min.
On the first day of January, sunrise is at 6:55 am and sunset at 5:09 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 5:35 pm CST.

Sunshine

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

UV index

In January, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The average daily UV index of 4 in January transform into the following instructions:
Take precautions - Protection against skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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 Slidell, Louisiana, 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 Slidell, the average relative humidity in January is 75%.

How many days does it rain in January in Slidell?

In Slidell, in January, it is raining for 9.9 days, with typically 1.73" (44mm) of accumulated precipitation.

When does it snow the most in Slidell?

The month with the most snowfall in Slidell is January, when snow falls for 0.3 days and typically aggregates up to 0.2" (5mm) of snow.

When does it start to snow 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.

How many hours of daylight does Slidell have in January?

In January, the average day length in Slidell is 10h and 27min.

What time are sunrise and sunset in January in Slidell?

In January, on the first day of the month, sunrise is at 6:55 am and sunset at 5:09 pm. On the last day of the month, in Slidell, sunrise is at 6:50 am and sunset at 5:35 pm CST.

How long on average sun shines in January in Slidell?

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

What is the UV index reading in January in Slidell?

In January, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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"Hg

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

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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").
The 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).
The 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: 10h and 27min

The month with the longest days is June (Average daylight: 14h and 4min).
The month with the shortest days is December (Average daylight: 10h and 14min).

  • Average sunshine in January: 5h and 42min

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

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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

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 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

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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