January Weather in Louisiana, United States

Last updated: June 24, 2025

In January, the average temperature in Louisiana, United States is a crisp -1°C (30°F). Be prepared for fluctuations, as temperatures can dip as low as -24°C (-11°F) and rise to a maximum of 18°C (64°F). Expect 67 mm (2.6 in) of precipitation over 8 days, contributing to an average humidity of 82%. Dress warmly and plan accordingly!

January Temperature in Louisiana

In January in Louisiana, the average temperature is -1°C (30°F). Maximum temperatures can reach 18°C (64°F), while the minimum can drop as low as -24°C (-11°F). It's essential to pack layers and prepare for a wide range of weather if you're planning to travel during this time.

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

The chart illustrates January temperature patterns in Louisiana, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Louisiana, January typically has an average temperature of -1°C (30°F), with highs reaching up to 18°C (64°F) and lows dropping to around -24°C (-11°F).

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

January Precipitation in Louisiana

In Louisiana in January, the total precipitation amount is 67 mm (2.6 in) over the course of 8 days.

January Precipitation Trends in Louisiana

The chart displays monthly precipitation patterns in Louisiana, 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 Louisiana, January typically receives around 67 mm (2.6 inches) of precipitation spread over approximately 8 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Louisiana

In Louisiana in January, humidity is 82%. With an average temperature of -1°C (30°F), this humidity feels like a sharp chill that penetrates your clothing, making travel uncomfortable and dampening your spirit as you navigate through the cold, moisture-laden air.

January Average Humidity in Louisiana

This chart illustrates the average monthly humidity levels in Louisiana, 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 Louisiana is approximately 82%, 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 Louisiana

In Louisiana in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Louisiana, you can check the information here.

Maximum UV Index Levels in Louisiana for January

The chart shows the monthly maximum UV Index (UVI) for Louisiana 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 Louisiana typically reaches 3, which falls under the moderate exposure category.

Data source: Louisiana 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 Louisiana Compares to Other Months

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

This table compares monthly weather conditions in Louisiana, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (30°F)	67 mm (2.6 inches)	82%	moderate
February Weather	0°C (33°F)	63 mm (2.5 inches)	80%	moderate
March Weather	7°C (45°F)	133 mm (5.2 inches)	80%	high
April Weather	12°C (54°F)	115 mm (4.5 inches)	80%	very high
May Weather	19°C (66°F)	168 mm (6.6 inches)	82%	very high
June Weather	24°C (76°F)	115 mm (4.5 inches)	83%	extreme
July Weather	26°C (79°F)	111 mm (4.4 inches)	81%	extreme
August Weather	24°C (75°F)	112 mm (4.4 inches)	80%	very high
September Weather	22°C (71°F)	76 mm (3.0 inches)	76%	very high
October Weather	14°C (58°F)	103 mm (4.0 inches)	76%	high
November Weather	6°C (43°F)	65 mm (2.6 inches)	85%	moderate
December Weather	3°C (37°F)	48 mm (1.9 inches)	86%	moderate