Barometric Pressure Forecast for Brownsville, Texas
Barometric pressure forecast for Brownsville, Texas — at the southern tip of Texas on the Rio Grande delta, across the river from Matamoros. Track current barometric pressure through the Gulf's tropical season and the rare strong northers.
Download Pressure Pal to track barometric pressure and get migraine alerts for Brownsville and your area.
Pressure and weather in Brownsville
Brownsville is the southernmost city in Texas, set on the flat Rio Grande delta a few miles from the Gulf of Mexico, with South Padre Island and the Laguna Madre just to the northeast. Its climate is subtropical and semi-arid, and for most of the year the barometer is remarkably calm. Warm, humid air flows in off the Gulf on a steady southeasterly breeze, and the daily cycle of sea breeze and land breeze matters more to comfort than any passing system. The big exception is the tropics. The lower Rio Grande Valley sits right in the path of Gulf storms, and from June to November, with a peak in August and September, a hurricane or tropical storm can bring a sudden, deep pressure drop along with torrential rain and flooding across the flat delta. Hurricane Beulah in 1967 and Dolly in 2008 are both remembered for the water they left behind. In winter, cold fronts from the north do reach this far south, though usually weakened. A strong norther can still bring a rapid rise in pressure, a gusty north wind and a sudden drop in temperature, and on rare occasions a hard freeze that damages the region's citrus groves.
What this means for you
Brownsville's chart is quiet most of the time, which makes the exceptions stand out: tropical systems in late summer and the occasional strong winter norther. Keeping a barometric pressure forecast handy during hurricane season is worthwhile, and a migraine tracker app can help you separate the effect of those rare deep lows from the everyday Gulf heat and humidity.