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March Weather in Brownsville, United States

Last updated: June 24, 2025

In March, the average temperature in Brownsville, United States hovers around 1°C (35°F). Expect temperatures to range from a chilly -24°C (-11°F) to a mild 20°C (68°F). During this time, the area experiences approximately 56 mm (2.2 in) of precipitation over about 10 days. With an average humidity of 85%, be prepared for a damp yet invigorating atmosphere!

March Temperature in Brownsville

In March in Brownsville, the average temperature is 1°C (35°F). Maximums can reach 20°C (68°F), while minimums can drop as low as -24°C (-11°F). Travelers should be prepared for a wide range of temperatures during this time.

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

The chart illustrates March 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, March typically has an average temperature of 1°C (35°F), with highs reaching up to 20°C (68°F) and lows dropping to around -24°C (-11°F).
JanFebMarAprMayJunJulAugSepOctNovDec212234445869737064503628
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.

March Precipitation in Brownsville

In Brownsville in March, the precipitation amount is 56 mm (2.2 in) over the course of 10 days.

March Precipitation Trends in Brownsville

The chart displays monthly precipitation patterns in Brownsville, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Brownsville, March typically receives around 56 mm (2.2 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec50495610511910710194891124445
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Brownsville

In Brownsville in March humidity is 85%. With an average temperature of 1°C (35°F), this humidity feels like a chilly blanket wrapping around you, making outdoor adventures damp and uncomfortable, especially for travelers unprepared for such a heavy and cold atmosphere.

March Average Humidity in Brownsville

This chart illustrates the average monthly humidity levels in Brownsville, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Brownsville is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Brownsville

In Brownsville in March, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Brownsville.

Maximum UV Index Levels in Brownsville for March

The chart shows the monthly maximum UV Index (UVI) for Brownsville in March, 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 March, the maximum UV index in Brownsville typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24589101097532
Data source: Brownsville March 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 March 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 March’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 March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (21°F)50 mm (2.0 inches)85%low
February Weather-6°C (22°F)49 mm (1.9 inches)85%moderate
March Weather1°C (35°F)56 mm (2.2 inches)85%moderate
April Weather7°C (45°F)105 mm (4.1 inches)85%very high
May Weather14°C (58°F)119 mm (4.7 inches)78%very high
June Weather20°C (69°F)107 mm (4.2 inches)80%very high
July Weather23°C (73°F)101 mm (4.0 inches)78%very high
August Weather21°C (70°F)94 mm (3.7 inches)76%very high
September Weather18°C (64°F)89 mm (3.5 inches)79%high
October Weather10°C (51°F)112 mm (4.4 inches)83%moderate
November Weather2°C (36°F)44 mm (1.7 inches)88%moderate
December Weather-2°C (29°F)45 mm (1.8 inches)81%low

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