Back to Weather

5-day forecast / Princeton, TX

WednesdayMostly Cloudy then Slight Chance Showers And Thunderstorms94° / 73° 20%
ThursdayShowers And Thunderstorms82° / 70° 95%
FridayShowers And Thunderstorms81° / 66° 90%
SaturdayRain Showers Likely79° / 65° 65%
SundayChance Rain Showers80° / 62° 36%

Flood watch covers Princeton, Texas, as slow-moving rain approaches

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

Collin County is included through Friday morning; residents can use Princeton Alerts to keep up with emergency notices.

Princeton 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.

Princeton, Texas, is included in a Collin County flood watch from 4 p.m. Wednesday, Sept. 30, through 7 a.m. Friday, Oct. 2, as forecasters track a slow-moving round of showers and storms.

The National Weather Service projects 2 to 4 inches of rain across the watch area, with localized pockets of 4 to 6 inches. Those totals describe the regional risk, not a precise forecast for every street or subdivision in Princeton.

Excess runoff could flood creeks, streams and other low-lying places. Low-water crossings may also be affected. The watch asks residents to prepare and monitor later forecasts; it is not a statement that flash flooding is already occurring across town.

Princeton's official emergency-notification page offers Princeton Alerts through CivicReady. Subscribers can choose phone calls, text messages or email for emergency information. The city also recommends having several ways to receive weather alerts.

Outdoor sirens are designed to reach people outside, the city's emergency-management guidance explains. They should not be the only way a household follows a changing forecast indoors.

Check current alerts before driving, and avoid any road covered by water. Use the latest official warning and its boundaries to decide what action is needed; a regional rainfall forecast cannot establish conditions on an individual road.

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

Princeton Texas emergency alerts: https://princetontx.gov/357/Emergency-Alerts-Notifications

Princeton emergency management: https://www.princetontx.gov/178/Emergency-Management

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).

Share

Princeton Newsroom

Reporting from Princeton and the surrounding area.

Related Stories

More in Sport