January Weather in Lafayette, United States

Last updated: June 24, 2025

In January, the average temperature in Lafayette, United States hovers around 4°C (40°F). Expect a minimum chill of -15°C (5°F) and a comfortable maximum of 23°C (74°F). Precipitation is likely, with 110 mm (4.3 in) falling over 11 days, contributing to an average humidity of a damp 87%.

January Temperature in Lafayette

In January in Lafayette, the average temperature is 4°C (40°F). Maximums can reach 23°C (74°F), while minimums can be as low as -15°C (5°F). Be prepared for a wide range of temperatures and pack accordingly for your travels.

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

The chart illustrates January temperature patterns in Lafayette, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lafayette, January typically has an average temperature of 4°C (40°F), with highs reaching up to 23°C (74°F) and lows dropping to around -15°C (5°F).

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

January Precipitation in Lafayette

In Lafayette in January, the precipitation amount is 110 mm (4.3 in) spread over 11 days.

January Precipitation Trends in Lafayette

The chart displays monthly precipitation patterns in Lafayette, 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 Lafayette, January typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 11 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 Lafayette

In Lafayette in January humidity is 87%. With an average temperature of 4°C (40°F), this humidity feels like an uncomfortable chill that seeps into your bones, making it essential to dress warmly and prepare for damp conditions, which can dampen your spirits while traveling.

January Average Humidity in Lafayette

This chart illustrates the average monthly humidity levels in Lafayette, 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 Lafayette is approximately 87%, 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 Lafayette

In Lafayette 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 Lafayette, you can check the information here.

Maximum UV Index Levels in Lafayette for January

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

Data source: Lafayette 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 Lafayette Compares to Other Months

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

This table compares monthly weather conditions in Lafayette, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (40°F)	110 mm (4.3 inches)	87%	moderate
February Weather	7°C (45°F)	197 mm (7.7 inches)	86%	high
March Weather	11°C (52°F)	165 mm (6.5 inches)	86%	high
April Weather	15°C (59°F)	154 mm (6.1 inches)	82%	very high
May Weather	21°C (70°F)	130 mm (5.1 inches)	82%	very high
June Weather	24°C (76°F)	164 mm (6.5 inches)	83%	extreme
July Weather	26°C (80°F)	132 mm (5.2 inches)	80%	extreme
August Weather	25°C (78°F)	134 mm (5.3 inches)	74%	very high
September Weather	23°C (73°F)	129 mm (5.1 inches)	71%	very high
October Weather	17°C (63°F)	150 mm (5.9 inches)	78%	high
November Weather	9°C (48°F)	92 mm (3.6 inches)	88%	moderate
December Weather	7°C (45°F)	154 mm (6.1 inches)	88%	moderate