Tomorrow | Weather | Sugar Land, Texas

Active Weather Warnings
Thursday, May 21, 2026
Stormy Weather
Day 79°
Night 72°
Precipitation 98 %
Wind 9 mph
UV Index (0 - 11+) 3
Weather Forecast History
Last Year's Weather on This Day (May 21, 2025)
Cloudy Weather

Day

86°

Night

72°

Wind

11 mph

UV Index

8

Precipitation

25 %

Weather Alerts and Warnings for

Severe Future Possible

Flood Watch

Flood Watch issued May 20 at 12:41PM CDT until May 25 at 7:00AM CDT by NWS Houston/Galveston TX
May 21, 7:00 AM May 25, 7:00 AM
WHAT: Flooding caused by excessive rainfall is possible.

WHERE: Portions of south central and southeast Texas, including
the following areas, in south central Texas, Coastal Jackson and
Inland Jackson. In southeast Texas, Brazoria Islands, Coastal
Brazoria, Coastal Galveston, Coastal Matagorda, Fort Bend,
Galveston Island, Inland Brazoria, Inland Galveston, Inland
Matagorda, Matagorda Islands and Wharton.

WHEN: From Thursday morning through Monday morning.

IMPACTS: Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Flooding may occur in poor drainage and urban areas.

ADDITIONAL DETAILS:
- Areas along the coast, especially Matagorda and Brazoria
Counties, received 4-6+" between Tuesday night and Wednesday
morning. These areas are expected to see another round of
moderate to heavy rainfall on Thursday and Friday which
brings the potential for flash flooding. The current extent
of this Flood Watch includes areas with a flood threat within
the next 24-48 hours, so the watch could be expanded in area
and as the rainfall threat evolves going into the weekend.
Rainfall rates are expected to peak in the 3-4+" per hour
range in the heaviest downpours. Additional rainfall totals
through Friday are anticipated to be in the 2-4" range along
the coast.
- http://www.weather.gov/safety/flood
+ Read More
You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
Updated: May 20, 4:00 PM Source: NWS Alert