nomadseason

March Weather in Brownsville, United States

Last updated: June 24, 2025

In March, the average temperature in Brownsville, United States typically hovers around 12°C (55°F). However, temperatures can swing significantly; you may experience a minimum of -7°C (19°F) or reach a maximum of 29°C (85°F). Be prepared for wet weather, as precipitation averages 166 mm (6.5 in) over approximately 14 days, contributing to an average humidity level of 84%.

March Temperature in Brownsville

In March in Brownsville, the average temperature is 12°C (55°F). Maximums can reach 29°C (85°F), while minimums can drop as low as -7°C (19°F). Be prepared for a wide range of temperatures, making it essential to pack layers for your travels.

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 12°C (55°F), with highs reaching up to 29°C (85°F) and lows dropping to around -7°C (19°F).
JanFebMarAprMayJunJulAugSepOctNovDec414554607178817975645046
Data source: Temperature data for Brownsville generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
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 166 mm (6.5 in) over a period of 14 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 166 mm (6.5 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec9917116614310310312311611311179144
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

March Humidity in Brownsville

In Brownsville in March, humidity is 84%. With an average temperature of 12°C (55°F), this humidity feels like a thick blanket wrapping around you, making it a challenge for traveling as you might feel sticky and uncomfortable while exploring the sights.

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 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%84%81%83%83%80%74%70%73%85%88%
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 is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, 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 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46710101111109753
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 Weather5°C (42°F)99 mm (3.9 inches)86%moderate
February Weather7°C (46°F)171 mm (6.7 inches)85%high
March Weather12°C (55°F)166 mm (6.5 inches)84%high
April Weather16°C (61°F)143 mm (5.6 inches)81%very high
May Weather22°C (71°F)103 mm (4.1 inches)83%very high
June Weather26°C (78°F)103 mm (4.1 inches)83%extreme
July Weather27°C (81°F)123 mm (4.9 inches)80%extreme
August Weather26°C (79°F)116 mm (4.6 inches)73%very high
September Weather24°C (75°F)113 mm (4.5 inches)70%very high
October Weather18°C (64°F)111 mm (4.4 inches)73%high
November Weather10°C (50°F)79 mm (3.1 inches)85%moderate
December Weather8°C (46°F)144 mm (5.7 inches)88%moderate

Compare Brownsville's Climate with Cities Worldwide