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Houston forecast: Heavy rain potential ramps up this weekend with a street flooding threat

Heavier and more widespread storms expected Monday and Tuesday

Rainy set-up

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HOUSTON – A quiet start to Sunday but showers and storms will continue to build through the afternoon and evening. Check out Radar Below.

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Sunday’s forecast:

Street flooding is possible today as rounds of rain and thunderstorms continue to move inland throughout the afternoon and evening. The day isn’t a complete washout-there will be dry periods between the scattered downpours.

Heaviest rain is over our eastern cities Sunday afternoon (Copyright 2026 by KPRC Click2Houston - All rights reserved.)
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Monday and Tuesday’s forecast:

These are the two days I want you to make sure you’re prepared for. There is the potential for street flooding both days. We haven’t had a heavy rain forecast like this in a month. Not only do we have tropical moisture streaming in from the Gulf, but we also have a front that will enhance the lift of the storms. This combination may lead to rain totals of 2″-3″.

Threat is higher on Monday for most of SE Texas (Copyright 2026 by KPRC Click2Houston - All rights reserved.)

The impact of Saharan Dust:

One part of the forecast that remains difficult to model is the impact of Saharan dust. We expect a plume of dust to move over Southeast Texas from Monday evening through Tuesday, and current imagery suggests it could be fairly dense.

Thick layers of dust aloft tend to dry the atmosphere and promote sinking air, which can limit the intensity of rainfall. If the dust is less concentrated, however, its tiny particles can serve as condensation nuclei and actually enhance rain development.

At this point, I expect abundant Gulf moisture to outweigh the dust’s suppressing effects. Still, if storm impacts are more limited than expected on Monday and Tuesday, Saharan dust is a likely reason.

Thick dust is possible Monday and Tuesday (Copyright 2026 by KPRC Click2Houston - All rights reserved.)

10 Day Forecast:

Once we get through Tuesday high pressure will begin to build in. By the end of next week drier weather is expected with hotter temperatures.

Pattern returns to dry by the end of the week