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January Weather in Brownsville, United States

Last updated: June 24, 2025

In January, the average temperature in Brownsville, United States hovers around 3°C (38°F). Conditions can be quite variable, with minimums dropping to -19°C (-2°F) and maximums reaching a mild 21°C (70°F). Prepare for some damp days as precipitation averages 99 mm (3.9 in) over approximately 10 days, coupled with a high average humidity of 87%.

January Temperature in Brownsville

In January in Brownsville, the average temperature is 3°C (38°F), with maximums reaching up to 21°C (70°F) and minimums dropping as low as -19°C (-2°F). Travelers should be prepared for a wide range of temperatures during this month.

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 3°C (38°F), with highs reaching up to 21°C (70°F) and lows dropping to around -19°C (-2°F).
JanFebMarAprMayJunJulAugSepOctNovDec384250576976807773624643
Data source: Temperature data for Brownsville generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Brownsville

In Brownsville in January, the total precipitation amount is 99 mm (3.9 in) spread over a period of 10 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 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec9917813615011914412011812912091131
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Brownsville

In Brownsville in January humidity is 87%. With an average temperature of 3°C (38°F), this humidity feels like a chilly blanket wrapped around you, making travel quite uncomfortable as the cold dampness seeps into your clothes and lingers in the air, often leaving you shivering and longing for warmer, drier conditions.

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 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%82%83%83%80%74%71%78%88%88%
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 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 Brownsville, you can check the information here.

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 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
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.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)99 mm (3.9 inches)87%moderate
February Weather6°C (43°F)177 mm (7.0 inches)86%high
March Weather10°C (50°F)136 mm (5.4 inches)86%high
April Weather14°C (58°F)150 mm (5.9 inches)82%very high
May Weather20°C (69°F)119 mm (4.7 inches)82%very high
June Weather24°C (76°F)144 mm (5.7 inches)83%extreme
July Weather27°C (80°F)120 mm (4.7 inches)80%extreme
August Weather25°C (78°F)118 mm (4.6 inches)74%very high
September Weather23°C (73°F)129 mm (5.1 inches)71%very high
October Weather16°C (62°F)120 mm (4.7 inches)78%high
November Weather8°C (47°F)91 mm (3.6 inches)88%moderate
December Weather6°C (43°F)131 mm (5.1 inches)88%moderate

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