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Weather Forecast

The ERCOT Weather Forecast is developed by ERCOT Meteorologists Chris Coleman, Mia Schroller, and Brandon Gale. The interactive map displays today’s temperature information for major cities located within the ERCOT grid. Hover over a city to see the most recent temperature forecast. 


Note: A Weather Zone is a geographic region designated by ERCOT in which climatological characteristics are similar for all areas within such region. This map displays the various Weather Zones that exist within the ERCOT footprint, but it does not necessarily include all counties that have participation within the ERCOT market.



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Weather Forecast Details


General Discussion:
Upper-level high pressure will continue to support above-normal tempratures for much of the ERCOT Region this week. 

Daytime highs will continue to warm into Tuesday with upper 90s and triple digits forecast by the afternoon. Spotty rain is possible across Far West Texas, but rain chances will otherwise remain minimal for the rest of the state. Temperatures likely peak into Wednesday with widespread triple digits expected, along with heat indices in the range of 110-115 degrees in several locations. No significant pattern changes are expected through at least the end of the month, allowing the heat to continue for the foreseeable future.

In tropical news, Tropical Storm Bertha in the Northeastern Gulf will gradually work westward in the days ahead. Land interaction with Louisiana and inconducive environmental factors are expected to signficantly weaken the system through the end of the week. As a result, significant impacts are not expected to the ERCOT Region, but depending on how well the remnants of the system hold together, rain chances and cloud cover can't be ruled out for parts of South and East Texas in particular by Friday and Saturday.

Today:
Generally sunny and hot. Becoming partly cloudy across portions of Far West and Far North Texas, where isolated showers and storms will be possible. Highs in the upper 90s and low 100s.

Tomorrow:
Mostly sunny to partly cloudy skies and hot. Mainly dry, minus a few isolated showers and storms across portions of Central, East, and North Texas. Lows in the 70s and 80s followed by highs in the widespread 100s. 

Forecaster: MS

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Low and high temperatures forecast for the next seven days for major cities within the ERCOT System.
Jul 21, 2026 - pdf - 318.5 KB
Forecast Variability Report
ERCOT’s assessment of the potential for load, wind, and solar conditions to vary between forecasts and actuals.
Jul 21, 2026 - pdf - 12.4 KB
Monthly Temperature & Precipitation Review
A general synopsis of weather conditions observed in Dallas, Austin, San Antonio, and Houston in the previous month.
Jul 6, 2026 - pdf - 180.5 KB
Weather Seasonal Updates
A seasonal forecast for the ERCOT Region.
May 22, 2026 - pdf - 1.4 MB