Late summer heat to hang around for awhile, although some drier air will help a bit

Good morning. Don’t look now, but Houston’s exceptionally hot summer continues. September is not yet over, but this month is on pace to—you guessed it—become the warmest September on record in Houston. The month’s average temperature is 85.6 degrees so far, which would smash the city’s record for September heat. Unfortunately, as you’ll see in the forecast below, our above-normal warmth will continue for some time.

This lingering heat has had all manner of negative effects, including on electricity bills for cooling your home. As part of our partnership with Reliant, I recently sat down with Reliant Energy’s Hosea James to discuss the incredible heat we experienced in the 2023 summer season, how that impacts customer electricity bills, and resources for assistance. You can watch the video here.

Houston has tied or broken five high temperature records this month. (National Weather Service)


With a nearly stationary boundary offshore, Houston will see another day during which at least some scattered showers and a few thunderstorms should pop up during the afternoon and evening hours. Chances will be best closer to the coast, so perhaps 30 percent for areas south of Interstate 10, with a lesser likelihood for inland areas. High temperatures today should climb into the low to mid-90s, with mostly sunny skies and light northeasterly winds. Low temperatures tonight will drop into the mid-70s.


Expect day a lot like Wednesday in terms of the overall setup, but rain chances will likely be a little bit less. Highs again will be in the low- to mid-90s.

Friday, Saturday, and Sunday

The pattern looks incredibly consistent over the weekend, with high pressure more or less in control of our weather. We’re going to see continued days with highs in the low- to mid-90s, sunny skies, and generally light winds. The influx of some slightly drier air will have several effects. It should shut down any meaningful rain chances, but it also will slightly lower the overall humidity levels. So the heat will feel a little bit more comfortable. (Emphasis on a little bit). Overnight lows will be in the lower 70s for most of the area.

Don’t expect much variability in temperatures for awhile. (Weather Bell)

Next week

There does not appear to be much change in this pattern for the first half of next week. After that? Well, the first opportunity for a cool front comes about 10 days from now, but again, it’s far from certain. It is fairly depressing to write this, so I can’t imagine what you’re thinking, but it does look like “late summer” is going to hold on for awhile, at least into the first week of October.

A note from Reliant

As Eric diligently reported, summer brought intense, unrelenting heat in Southeast Texas this year. While we may be out of this stretch of extraordinary temperatures, energy bills covering that time when ACs were working harder than ever are starting to arrive. Reliant prioritizes giving everyone access to the electricity they need to live comfortably. Anyone concerned about summer bills or needing payment assistance is encouraged to contact Reliant. We are here to help with agents available 24/7 via live phone support, online chat, or on the Reliant app.

With the usual caveats, I’m happy to say that the 2023 Texas hurricane season is over

This has been an unprecedented year, heat-wise, so it’s difficult to rely too much on past climate and weather norms. However, we have reached the point of the year after which it is extremely unlikely for a hurricane to strike the state of Texas. The historical odds of doing so after the date of September 24 are approximately 1-in-50.

Despite the fact that the Gulf of Mexico remains toasty warm, if there ever were a year to call the season in late September for Texas, this is the season. Wind shear has been exceptionally high over the last few weeks, and it is showing no signs of abating in the near future. And the overall pattern does not appear to support the movement of tropical systems into the Western Gulf of Mexico toward Texas. The bottom line is that history says we’re done, and the current setup says we’re done. Never say never, but we’re probably done.

Even as far as October 8, the European ensemble model is forecast wind shear conditions very hostile to tropical systems over the northern and Western Gulf of Mexico. (Weather Bell)

That is not to say that we still cannot see a tropical storm or a disturbance that brings us rain. That can happen in October, and has in the past. But these are mostly moisture events rather than serious wind or surge events. This also says nothing about the hurricane odds for Louisiana and points east. It remains an active Atlantic season, which we’re tracking for you on The Eyewall. So my advice is this: Although the Atlantic hurricane season will continue for another couple of months, you can breathe a little easier this morning if you live in Texas.


Houston saw some solid, widespread showers and thunderstorms on Monday. If you got the rain you needed, that’s great. If you didn’t, well, that’s probably the end of the widespread showers for awhile. We’ll still have some spotty rain chances going forward, but nothing like Monday. For areas south of Interstate 10, chances today are probably about 30 percent, and for areas north they’re much closer to zero percent as the weak front that drove Monday’s storms has moved offshore.

Skies today will be mostly sunny, with a light northeast wind, and highs of around 90 degrees or slightly above. Our air is slightly drier, and this should help low temperatures drop into the low 70s for much of the city, with upper 60s possible for far inland areas.


Another day a lot like Tuesday, with coastal areas seeing a chance of rain, and highs generally in the low 90s.

Thursday and Friday

The overall pattern more or less continues, with highs in the low 90s and sunny skies. Nights, generally, will drop into the mid-70s. Rain chances will continue to hover in the 10 to 20 percent range, so unlikely for most.

By Sunday morning, some inland areas should start to see low temperatures in the upper 60s. (Weather Bell)

Saturday and Sunday

The upper atmosphere will support the flow of some modestly drier air starting this weekend, so that will allow daytime temperatures to rise a bit. But this will also support more rapid cooling in the evenings, and somewhat lower humidity. Look for highs in the low- to mid-90s this weekend, with sunny skies, and lows in the low 70s except near the coast.

Next week

The overall flow of somewhat drier air should continue next week, with highs generally in the low 90s, and nighttime temperatures in the more seasonable low 70s. It won’t be fall, but it’s something a bit nicer than summer. Truth be told, after the summer we experienced, it should feel pretty good outside. There are some hints of fall’s first real front about 10 days from now, but they’re not strong enough for me to have any confidence. We’ll see.

Storms are possible today as a weak front sags into the Houston area

After a torrid weekend—Sunday’s high temperature of 97 degrees broke the all-time record for September 24 of 95 degrees, which had been set just the previous year—some relief is on the way. A weak front will slowly push southward into the city today. This will bring widespread showers and thunderstorms, with a slight chance of hail and damaging winds. In the front’s wake we’ll see slightly cooler days and nights, with drier air making for somewhat more pleasant mornings and evenings.

Conditions are marginal for severe weather today, which means it is possible but unlikely. (NOAA)


As of 6:30 am CT we’re seeing storms fire up near Cypress and Huntsville, and the focus of activity during the morning hours will generally be along and north of Interstate 10. This afternoon and evening the better chances for rain will shift further south and closer to the coast. Overall rain chances are probably about 70 percent, with amounts varying widely.

Some areas will see a tenth or two of an inch, whereas some locations beneath stronger thunderstorms may pick up 1 to 2 inches of rainfall. Stronger thunderstorms will also carry the potential for severe weather, like hail and damaging winds. However, the dynamics are not super supportive for severe weather, so while it’s a possibility, I don’t anticipate bedlam out there.

In terms of temperatures, they’re going to be dependent on cloud coverage and storms this afternoon. Most areas will probably reach the low 90s, however. Overnight lows will drop into the mid-70s for much of the area, with a chance of showers lingering south of Interstate 10.


The aforementioned front is essentially going to stall out along the coast. For areas south of Interstate 10, then, a decent chance of showers will persist on Tuesday. Further inland, however, rain chances will likely be only 10 or 20 percent. Expect daytime highs in the low 90s, with partly sunny skies, and light northeast winds. Lows on Tuesday night should drop into the mid-70s. The air will be slightly (but only very slightly) drier than it has been.

Wednesday, Thursday, and Friday

The latter half of the week should see high temperatures generally in the low-90s, with partly to mostly sunny skies. Rain chances will probably drop back to 20 percent, again, with this higher likelihood nearer to the coast. Nights will generally fall into the mid-70s.

NOAA rain accumulation forecast for now through Wednesday. (Weather Bell)

Saturday and Sunday

The overall atmospheric setup favors a slightly drier flow of air this weekend, and with lower dewpoints we’ll see a couple of effects. First of all, rain chances will be basically zero, with sunny skies. Highs will likely reach the mid-90s, but with the drier air we’ll also cool off more quickly in the evenings, so it should feel a little bit nicer outside in those instances.

Next week

This pattern should more or less continue into next week, however the trend may be toward a bit cooler conditions by the middle of next week. It’s possible that we could see something of a stronger front in about 10 to 14 days. There are hints of it in the models and the overall pattern. But the signal is not particularly strong, so my confidence is low. For now, enjoy your extended summer, Houston.

Mother Nature will take one look at the September equinox and laugh

Good morning. Houston faces four more hot, sunny, and humid days that will carry us through the weekend. However, unlike earlier this summer when high pressure remained intransigent, this high pressure system will start to shift eastward by this weekend. This will allow a weak front to move into, and stall over the Houston region, providing some slight relief in terms of rain showers and moderately cooler temperatures.


Skies will be mostly sunny today, with highs in the mid-90s for most of the area, with some inland points possibly reaching the upper 90s. Winds will be light, out of the southeast, at 5 to 10 mph. There is a very slight chance of showers or thunderstorms, perhaps 10 percent, this afternoon. Temperatures tonight will be sticky and warm, only briefly dropping below 80 degrees.

Hot, hot, hot, hot and then slightly less hot for Houston’s weather. (Weather Bell)


The last day of the work week will be a lot like Thursday, albeit with a bit higher chance of rain. I’d look for the possibility of thunderstorms to develop during the late afternoon or early evening hours, with perhaps a 20 or 30 percent likelihood of that happening. It’s something we’ll keep an eye on for Friday night lights, and this being Homecoming season for many schools.

Saturday and Sunday

At 1:49 am CT on Saturday we’ll reach the September equinox, the point at which the Sun crosses the equator and heads south. This is the traditional start of fall, and the march toward winter in the Northern Hemisphere, but Mother Nature will care not a single whit this year.

The weekend just looks hot and mostly sunny, with highs in the mid-90s for much of the city, and the possibility of upper 90s further inland. Rain chances, again, will be on the order of 20 to 30 percent each day, but mostly it’s just gonna be sunny outside. Nights will continue to be warm.

NOAA rainfall accumulation forecast for now through next Tuesday. Take this as a (very) rough guide. (Weather Bell)

Next week

As I mentioned above, a weak front is going to move toward the region by the end of the weekend, and this will change our weather somewhat for next week. I’m afraid I still don’t have great confidence in that that means. It could lead to widespread rainfall accumulations for much of the area in excess of 1 inch, or it could be a tenth of an inch, or two. Monday will have the best chance of rain. The front also could lead to nighttime lows in the lower 70s, or we might get lucky and drop into the upper 60s. At the least, it should mean highs fall into the low 90s for awhile.