January weather forecast
Southlake, TX

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Weather in January

January, like December, in Southlake, Texas, is a cool winter month, with an average temperature ranging between min 38.8°F (3.8°C) and max 54.5°F (12.5°C).

Temperature

Southlake records the coldest temperatures in January, averaging a high of 54.5°F (12.5°C) and a low of 38.8°F (3.8°C).

Humidity

In January, the average relative humidity is 63%.

Rainfall

In Southlake, in January, during 4.5 rainfall days, 0.55" (14mm) of precipitation is typically accumulated. Throughout the year, there are 97.8 rainfall days, and 9.29" (236mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March. January is the first month it typically snows. Throughout January, in the average 0.3 snowfall days, it receives 0.04" (1mm) of snow. In Southlake, during the entire year, snow falls for 1.8 days and aggregates up to 0.28" (7mm) of snow.

Daylight

The average length of the day in January is 10h and 16min.
On the first day of January, sunrise is at 7:31 am and sunset at 5:32 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:59 pm CST.

Sunshine

In January, the average sunshine is 6h.

UV index

January and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In January, the maximum UV index of 3 transforms into these recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months in Southlake?

January, with its average high-temperature of 54.5°F (12.5°C) and an average low-temperature of 38.8°F (3.8°C), holds the record as the coldest month.

What is the average January temperature?

The average high-temperature, in January, in Southlake, is 54.5°F (12.5°C), while the average low-temperature is 38.8°F (3.8°C).

What is the average humidity in January?

In Southlake, Texas, the average relative humidity in January is 63%.

How much does it rain in January?

In Southlake, in January, during 4.5 rainfall days, 0.55" (14mm) of precipitation is typically accumulated.

When does it start snowing?

January is the first month it typically snows. Throughout January, in the average 0.3 snowfall days, it receives 0.04" (1mm) of snow.

How many hours of daylight does Southlake have in January?

In January, the average day length is 10h and 16min.

What time are sunrise and sunset in January?

On the first day of January, sunrise is at 7:31 am and sunset at 5:32 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:59 pm CST.

How many hours of sunshine does Southlake have in January?

In Southlake, the average sunshine duration in January is 6h.

When is the lowest UV index?

January and December, with an average maximum UV index of 3, are months with the lowest UV index.

What is the UV index intensity in January in Southlake?

The average daily maximum UV index in January in Southlake is 3. A UV Index estimate of 3 to 5 represents a medium health risk from 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 January
Southlake, TX

Average temperature in January - Southlake, TX
  • Average high temperature in January: 54.5°F

The warmest month (with the highest average high temperature) is August (96.4°F).
The month with the lowest average high temperature is January (54.5°F).

  • Average low temperature in January: 38.8°F

The month with the highest average low temperature is August (77.2°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).

Average pressure in January
Southlake, TX

Average pressure in January - Southlake, TX
  • Average pressure in January: 30.16"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in January
Southlake, TX

Average wind speed in January - Southlake, TX
  • Average wind speed in January: 9.1mph

The windiest months (with the highest average wind speed) are March and April (10.1mph).
The calmest month (with the lowest average wind speed) is September (6.7mph).

Average humidity in January
Southlake, TX

Average humidity in January - Southlake, TX
  • Average humidity in January: 63%

The month with the highest relative humidity is May (71%).
The month with the lowest relative humidity is August (54%).

Average rainfall in January
Southlake, TX

Average rainfall in January - Southlake, TX
  • Average rainfall in January: 0.55"

The wettest month (with the highest rainfall) is May (1.34").
The driest month (with the least rainfall) is February (0.39").

Average rainfall days in January
Southlake, TX

Average rainfall days in January - Southlake, TX
  • Average rainfall days in January: 4.5 days

The month with the highest number of rainy days is September (10.5 days).
The month with the least rainy days is January (4.5 days).

Average snowfall in January
Southlake, TX

Average snowfall in January - Southlake, TX
  • Average snowfall in January: 0.04"

The month with the highest snowfall is February (0.16").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").

Average snowfall days in January
Southlake, TX

Average snowfall days in January - Southlake, TX
  • Average snowfall days in January: 0.3 days

The month with the highest number of snowfall days is February (0.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in January /
Average sunshine in January
Southlake, TX

Average daylight in January / Average sunshine in January - Southlake, TX
  • Average daylight in January: 10h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in January: 6h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

Average sunshine days in January
Southlake, TX

Average sunshine days in January - Southlake, TX
  • Average sunshine days in January: 25.1 days

The month with the most sunshine days is January (25.1 days).
The month with the least sunshine days is September (16.8 days).

Average UV index in January
Southlake, TX

Average UV index in January - Southlake, TX
  • Average UV index in January: 3

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

Average cloud cover in January
Southlake, TX

Average cloud cover in January - Southlake, TX
  • Average cloud cover in January: 30

The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 19).

Average visibility in January
Southlake, TX

Average visibility in January - Southlake, TX
  • 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).

Southlake, Texas, USA

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