We are monitoring two disturbances, one in the Gulf and the other east of the Caribbean (Remnants of Dolly). The system in the Gulf has become better organized and has a 70% chance of development as it drifts WNW over the next few days. It is expected to bring an increased chance of showers and storms on Tuesday, as well as an increased risk of heavy rainfall and flash flooding.
Atmospheric conditions are expected to be favorable for producing high levels of ozone pollution across the Houston, Galveston, and surrounding areas through Monday evening, creating conditions that are considered unhealthy for sensitive groups. To help mitigate these levels, residents are encouraged to limit driving or carpool when possible. Furthermore, those planning outdoor activities are advised to restrict them to the early morning or late evening hours to avoid peak pollution times.
Sunday Night’s Outlook: Warm and muggy conditions persist for the Houston/Galveston area. Overnight low temperatures are forecast to be 74-78°F inland and 75-82°F at the beaches. Patchy fog is possible around sunrise, accompanied by light and variable winds. Data updated on August 30, 2026.
Monday’s Outlook: Conditions will remain hot and humid with isolated afternoon showers and thunderstorms. Inland high temperatures will be 96-99°F, and beach highs will reach 92-95°F. Heat indices are expected to range from 102-107°F. Winds will be from the ENE to ESE at 5-10 mph.
Slight Risk (level 2 of 4) of Excessive Rainfall on Tuesday for our SE counties.
Marginal Risk (level 1 of 4) of Excessive Rainfall on Wednesday areawide.
Scattered showers and thunderstorms starting on Monday night, and increasing in coverage through Tuesday. The heaviest rainfall expected is on Tuesday afternoon/evening. Flash flooding is the most likely impact if repeated strong storms move over the same area. Rainfall rates may exceed 3-4"/hr in the heaviest downpours.
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