January Weather in Southlake, United States

Last updated: June 24, 2025

In January, the average temperature in Southlake, United States hovers around 8°C (46°F). Expect a temperature range from a chilly -13°C (10°F) to a warm 27°C (80°F). With an average humidity of 80%, it's a good idea to prepare for the 52 mm (2.0 in) of precipitation expected over 7 days. Stay ready for a mix of weather this month!

January Temperature in Southlake

In January in Southlake, the average temperature is 8°C (46°F). Maximums can reach 27°C (80°F) and minimums can drop as low as -13°C (10°F). Be prepared for a wide range of temperatures when traveling during this month.

January Weather in Southlake: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Southlake, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Southlake, January typically has an average temperature of 8°C (46°F), with highs reaching up to 27°C (80°F) and lows dropping to around -13°C (10°F).

Data source: Temperature data for Southlake generated using information from the Copernicus Climate Change Service.

January Precipitation in Southlake

In Southlake in January, the precipitation amount is 52 mm (2.0 in) over a duration of 7 days.

January Precipitation Trends in Southlake

The chart displays monthly precipitation patterns in Southlake, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Southlake, January typically receives around 52 mm (2.0 inches) of precipitation spread over approximately 7 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Southlake

In Southlake in January, humidity is 80%. With an average temperature of 8°C (46°F), this humidity feels like traveling through a damp and chilly mist, making even a short walk feel heavy and uncomfortable.

January Average Humidity in Southlake

This chart illustrates the average monthly humidity levels in Southlake, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Southlake is approximately 80%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Southlake

In Southlake in January, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Southlake for better planning.

Maximum UV Index Levels in Southlake for January

The chart shows the monthly maximum UV Index (UVI) for Southlake in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Southlake typically reaches 4, which falls under the moderate exposure category.

Data source: Southlake January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in Southlake Compares to Other Months

Weather in Southlake varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Southlake, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Southlake, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (46°F)	52 mm (2.0 inches)	80%	moderate
February Weather	9°C (49°F)	89 mm (3.5 inches)	79%	high
March Weather	16°C (60°F)	100 mm (3.9 inches)	78%	very high
April Weather	18°C (65°F)	104 mm (4.1 inches)	78%	very high
May Weather	24°C (75°F)	150 mm (5.9 inches)	81%	extreme
June Weather	27°C (82°F)	88 mm (3.5 inches)	78%	extreme
July Weather	30°C (85°F)	40 mm (1.6 inches)	73%	extreme
August Weather	29°C (85°F)	87 mm (3.4 inches)	66%	extreme
September Weather	26°C (79°F)	79 mm (3.1 inches)	65%	very high
October Weather	20°C (68°F)	133 mm (5.2 inches)	72%	very high
November Weather	13°C (56°F)	54 mm (2.1 inches)	82%	high
December Weather	11°C (51°F)	52 mm (2.0 inches)	87%	moderate