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How cool will it get in Houston as we step into September?

Here’s what to expect this month

It's September! Does that mean porch weather? Quite possibly if you wake up early! (Copyright 2024 by KPRC Click2Houston - All rights reserved.)

HOUSTON – September is finally here! Football is back, stores are decked out for Halloween and our weather will start to change! We’re even tracking our first cold front. Here’s what we can expect to see this month.

THINGS TO DO: Must-see events for September in Houston from festivals to live music

If you’re seeking out cooler weather, we do expect a gradual cooling in September. Our average high drops to 88° by the end of the month. Our average low drops to 67° - thank goodness!

The hottest we've ever been in September was 109° and the coolest was 45°! That's a 64° range! (Copyright 2024 by KPRC Click2Houston - All rights reserved.)

Even though we expect our temperatures to cool seasonally, the Climate Prediction Center expects most of the United States to be above average through the month.

Nearly the entire United States is expected to be above normal during the month of September. (Copyright 2024 by KPRC Click2Houston - All rights reserved.)

Here in Houston, we are not guaranteed to see any crisp fall weather this month. Last year we didn’t see any highs in September below 90°. As a reminder, our latest 100° day was September 27th after Hurricane Rita. Sheesh!

Our latest 100 degree day was in late September after Hurricane Rita. (Copyright 2024 by KPRC Click2Houston - All rights reserved.)

Through the month you will start to notice our sunsets getting much earlier. By the end of the month, sunset is at 7:07 p.m., which means we will have lost about 51 minutes of daylight.

We lose around 51 minutes of daylight this month. (Copyright 2024 by KPRC Click2Houston - All rights reserved.)

The full moon this month falls on September 17th. This is called the “harvest moon” because it’s the full moon closest to the Autumnal equinox. The Autumnal Equinox is the astronomical start to fall! This year it falls on Sunday, September 22nd at 7:43 a.m., this is when the sun is directly above the equator.

The full moon in September falls on September 17th. (Copyright 2024 by KPRC Click2Houston - All rights reserved.)

Another trait of September is hurricanes. The peak of hurricane season is just around the corner. The statistical peak is on September 10th. This does not mean we will have a tropical system on that day (and we’re not forecasting it) but it is the day we are most likely to have a named storm in the Atlantic Basin.

The peak tropical season is September 10th. (Copyright 2024 by KPRC Click2Houston - All rights reserved.)

Make sure you stay up to date with our forecast through the hurricane season. To be best prepared, check out our 2024 Hurricane & Flood Survival Guide.

Have a wonderful September!


About the Author
Caroline Brown headshot

Meteorologist, 6th generation Texan, country music lover, patio seeker

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