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5-day forecast / Melissa, TX

WednesdayMostly Cloudy then Slight Chance Showers And Thunderstorms93° / 73° 23%
ThursdayShowers And Thunderstorms80° / 69° 94%
FridayShowers And Thunderstorms79° / 66° 88%
SaturdayRain Showers Likely77° / 64° 63%
SundayChance Rain Showers78° / 61° 36%

Flood watch begins Wednesday; weather alerts require an opt-in in Melissa

Melissa weather, updated every four hours — local forecasts you can trust.

The city’s weather guidance explains a key step for residents ahead of possible heavy rain through Friday morning.

Melissa Newsroom

September 30, 20261 min read

NOAA GOES-19 satellite imagery of Texas and the Southern Plains at 10:36 p.m. CDT Tuesday, Sept. 29, 2026 (03:36 UTC Sept. 30). Credit: NOAA/NESDIS Center for Satellite Applications and Research (STAR). Satellite cloud imagery, not a depiction of observed flooding.

Melissa's residents are in the path of a new flood-watch window, and the city's emergency-alert guidance includes a detail worth checking now: National Weather Service alerts must be selected during registration.

The watch for Collin County begins at 4 p.m. Wednesday, Sept. 30, and continues until 7 a.m. Friday, Oct. 2. The Weather Service expects 2 to 4 inches of rain across the watch area, with localized totals of 4 to 6 inches as showers and storms move slowly.

Flooding remains a possibility, not a confirmed condition throughout the city. Forecasters identify creeks, streams, low-lying ground and low-water crossings as areas where runoff could become a problem.

Melissa's weather-information page directs residents to Everbridge to manage alerts and recommends its public-safety app. It says National Weather Service alerts are optional and must be selected. Merely installing an app or having an account should not be mistaken for checking those preferences.

The same city resource provides utility-outage links and a way to report traffic-signal problems. Its flood guidance is straightforward: avoid water-covered roads and do not try to open storm drains or manhole covers.

Keep the city's weather page and the latest Weather Service alert handy. Conditions and warning boundaries can change before the watch expires Friday morning; this forecast does not establish any school cancellation or street closure.

Sources: NWS Fort Worth flood watch, Sept. 29, 2026 at 2:15 p.m. CDT: https://forecast.weather.gov/showsigwx.php?firewxzone=TXZ103&lat=33.0292&local_place1=Flower+Mound+TX&lon=-97.0687&product1=Flood+Watch&warncounty=TXC121&warnzone=TXZ103

Melissa weather hub: https://www.cityofmelissa.com/568/Weather

Melissa emergency alerts: https://www.cityofmelissa.com/346/Emergency-Alerts-Notifications

Satellite image: NOAA GOES-19 Southern Plains view at 10:36 p.m. CDT Sept. 29, 2026 (03:36 UTC Sept. 30). Credit: NOAA/NESDIS Center for Satellite Applications and Research (STAR).

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Melissa Newsroom

Reporting from Melissa and the surrounding area.

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