January Weather in Brownsville, United States

Last updated: June 24, 2025

In Brownsville, United States, the average temperature in January hovers around 5°C (42°F). Expect a chilly minimum of -18°C (-1°F) and a pleasant maximum of 23°C (74°F). Rainfall is quite notable, with 99 mm (3.9 in) spread over 9 days, while the air holds an average humidity of 86%. Prepare for a month of varied weather!

January Temperature in Brownsville

In January in Brownsville, the average temperature is 5°C (42°F). Maximum temperatures can reach 23°C (74°F), while minimums can drop as low as -18°C (-1°F). Travelers should be prepared for a wide range of temperatures, ensuring to pack for both cold and warm conditions.

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

The chart illustrates January temperature patterns in Brownsville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Brownsville, January typically has an average temperature of 5°C (42°F), with highs reaching up to 23°C (74°F) and lows dropping to around -18°C (-1°F).

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

January Precipitation in Brownsville

In Brownsville in January, the precipitation amount is 99 mm (3.9 in) during a span of 9 days.

January Precipitation Trends in Brownsville

The chart displays monthly precipitation patterns in Brownsville, 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 Brownsville, January typically receives around 99 mm (3.9 inches) of precipitation spread over approximately 9 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 Brownsville

In Brownsville in January, humidity is 86%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that penetrates your layers, making outdoor activities quite uncomfortable and prompting you to seek warmth indoors more often.

January Average Humidity in Brownsville

This chart illustrates the average monthly humidity levels in Brownsville, 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 Brownsville is approximately 86%, 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 Brownsville

In Brownsville 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 Brownsville for better planning.

Maximum UV Index Levels in Brownsville for January

The chart shows the monthly maximum UV Index (UVI) for Brownsville 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 Brownsville typically reaches 4, which falls under the moderate exposure category.

Data source: Brownsville 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 Brownsville Compares to Other Months

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

This table compares monthly weather conditions in Brownsville, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (42°F)	99 mm (3.9 inches)	86%	moderate
February Weather	7°C (46°F)	171 mm (6.7 inches)	85%	high
March Weather	12°C (55°F)	166 mm (6.5 inches)	84%	high
April Weather	16°C (61°F)	143 mm (5.6 inches)	81%	very high
May Weather	22°C (71°F)	103 mm (4.1 inches)	83%	very high
June Weather	26°C (78°F)	103 mm (4.1 inches)	83%	extreme
July Weather	27°C (81°F)	123 mm (4.9 inches)	80%	extreme
August Weather	26°C (79°F)	116 mm (4.6 inches)	73%	very high
September Weather	24°C (75°F)	113 mm (4.5 inches)	70%	very high
October Weather	18°C (64°F)	111 mm (4.4 inches)	73%	high
November Weather	10°C (50°F)	79 mm (3.1 inches)	85%	moderate
December Weather	8°C (46°F)	144 mm (5.7 inches)	88%	moderate