Port Isabel weather
Loading live data…Latest for Port Isabel: NWS (National Blend (NBM)): 75° Mainly clear · American (NOAA GFS): 75° Overcast · European (ECMWF): 78° Light drizzle.
CheckWeather.io on iPhoneFree. No ads, no account.Port Isabel weather alerts and warnings
active National Weather Service watches, warnings and advisoriesChecking the National Weather Service for active alerts covering Port Isabel…
Port Isabel weather in numbers
from 30 years of measured normalsPort Isabel swings 33°F across the year, from 90°F highs in June to 57°F lows in January, and September is usually the wettest month in a year that brings about 28 in of precipitation.
The weather map: all three models at once
NWS, American, European side by side around Port Isabel and nearby towns.Live rain radar →Port Isabel hourly forecast: next 14 hours
consensus of the three modelsRain in the next 24 hours, model by model
each model's own hourly precipitation, side by sideLoading the three models…
Port Isabel 10-day forecast, out to 14 days
where the models agree, and where they splitPort Isabel, Texas (TX) is at its warmest in Jun (average highs near 90°F) and coldest in Jan (lows around 57°F), with roughly 28 in of precipitation across the year. Below, compare what NWS, American, European forecast for Port Isabel right now, and see exactly where they disagree.
We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.
Port Isabel climate by month
average daytime high and overnight low across a typical year (1991-2020)Source: 1991-2020 averages, ERA5 for this place adjusted with NASA POWER.
How the weather around Port Isabel has changed since 1995
Port Isabel sits in the same roughly 50 km square of NASA's reanalysis as Brownsville. That square shows no clear change in temperature between 1995-2004 and 2015-2024. See the full 30-year picture on the Brownsville page.
Which forecast is most accurate in the US?
CheckWeather Score, graded against the weather that actually happened
The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.
What do you think of the forecasts?
your vote countsThe accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United States? Give each 1 to 5 stars.
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