Hot Week: Highs Around 100°; A Few Spotty Rain Chances!
Website: http://www.madisoncountytexasweather.com

Weather Provided By: Coy Bailey II (MCTX Weather)

(09/20/2026) Madison County Rain Total: —

Current Burn Bans: Austin, Brazos, Grimes, Houston, Lee, Madison, Milam, Robertson, Trinity, Walker, Waller, and Washington Counties!
Current Watches, Warnings, & Advisories: None!

Forecast Discussion:
Higher humidity levels are seeping back into the Brazos Valley to begin the last full week of September across the Brazos Valley, meaning hot temperatures and heat index values. Monday and Tuesday are seemingly muggier, as afternoon highs move back into the upper 90s to start the week in the Brazos Valley, with morning temperatures in the 70s areawide to begin each day. With humidity back on the books, heat index readings range between 100°-105° outdoors each afternoon and evening across Southeast Texas. With the available moisture overhead, a few afternoon showers and thunderstorms remain possible through the middle of the upcoming week across Southeast Texas. Madisonville, TX has a 20-30% chance of rain on the books through the end of Tuesday.

By mid-to-late week, high pressure remains persistent, shutting of local rain chances and turning up those hot temperatures in the Brazos Valley. Afternoon highs linger in the middle 90s Wednesday through the weekend locally, with sunshine and humidity attached. Nights are also in the 70s as well and are feeling sticky outside. That fall cool front some were hoping for will stay locked in North Texas, as high pressure shuts out that colder air from reaching the Brazos Valley this week. Above normal temperatures and equal chances for rain wrap up the month of September, as we look towards a chance for cooler weather by October 2026 for the Brazos Valley.

5-Day Weather Outlook:
Monday: High 97. Low 74. Sunny. 30% Chance/Rain.
Tuesday: High 97. Low 75. Sunny. 20% Chance/Rain.
Wednesday: High 96. Low 74. Mostly Sunny.

Thursday: High 94. Low 70. Mostly Sunny.

Friday: High 93. Low 70. Mostly Sunny.

Stay with Madison County, Texas Weather for the latest weather and tropical developments, including current radars, watches, warnings, advisories, and severe weather coverage.