Matt Lanza

Thursday was a day for the books in Houston. Hobby hit 107°, Huntsville hit 111°, but the 109° at Bush is only the third time on record we’ve ever recorded a temperature that hot in Houston. It was last done on August 27, 2011 and prior to that on September 4, 2000. Yesterday was also our second hottest day on record by average temperature (high + low divided by two). Even Galveston got into the act hitting 99 degrees for the first time since 2012.

While I would hesitate to say we’re going to get a reprieve today and tomorrow, the heat should be a little less intense, if only by a few degrees. There is a chance that we make a run deep into the 100s again on Sunday before some changes.

Not only was yesterday a historic heat day, it snapped a record streak of 48 consecutive days without measurable rainfall at IAH, which is the official Houston record now for longest dry streak. Hobby saw a storm in late July that has kept 2023 off their list of longest dry streaks (it did not rain there so yesterday was day 30 in a row; the record is 58 in spring of 2011). Not everyone saw rain yesterday, but some did, and it even led to some damage in Kingwood, most likely from downburst winds. We will have some other rain chances over the next few days, but just be warned that not everyone will get to partake.

We aren’t running into critically severe drought issues with things like water supply. Yet. Water restrictions are spreading however. But we are tinder dry in many parts and it continues to produce wildland fires. We’ve heard from some folks watching their foundations closely as well. So, yes, we need more rain.

Today & Saturday

Expect sunshine and clouds. We’ll top off in the low to mid-100s, with some humidity. It’ll be another day of heat advisories and excessive heat warnings. Rain chances will be in the 10 to 20 percent range today, mainly north of I-10. Areas to the south will probably be in the 5 to 10 percent range. Tomorrow’s rain chances are probably a little less than that.

Sunday

We should see a slight spike in temperatures Sunday, relative to Friday and Saturday. So look for highs well into the 100s on Sunday afternoon.

A few late day or evening storms may pop up, some of which could be on the stronger side, moving northeast to southwest across the area.

Monday through late week: Some good news

More of the same on Monday, with highs approaching the mid-100s again. Areas south of Houston could push deep into the 100s again. However, we have a front. This is not an autumn cool front, but it is a bit of a humidity boundary. This will probably swing through the Houston area Monday night or Tuesday. As it does so, showers and thunderstorms will be at their best chances. Not everyone will see rain, but it could be heavy at times where it falls. Coverage may be on the order of 30 to 40 percent or so.

Behind the front, it won’t be refreshing, but the mornings are almost certainly going to be noticeably less stifling. Look forward to that on perhaps Wednesday and Thursday morning. Daytime highs will have a bite taken from them, so instead of low to mid-100s every day, we’re probably looking at upper-90s and some low-100s. I’m not sure if we’re going to entirely rid ourselves of heat advisories, but we should have some days that will be comparatively “not bad” for this summer.

Unfortunately, assuming a front does push offshore, that’s going to take a big bite out of rain chances for mid to late next week. We may feel more comfortable, but we’ll continue to have to deal with increasing drought problems.

Tropics

We continue to watch this potential system in the eastern Gulf next week, and we continue to deem it no threat to Texas. Behind that we don’t see anything else of note for us in the tropics. More details on this can be found at our companion site, The Eyewall.

Yesterday’s drought monitor report was pretty much what you’d expect for the Houston area. Drought coverage doubled in size from half the region to the entire region. Severe drought quadrupled from just over 10 percent coverage to over 40 percent coverage, basically along and to the right of Highway 59.

We’ve seen burn bans expand this week, and I believe we’re getting closer to seeing more water restrictions and conservation measures take hold across the area. Tomball entered that category this week, and I assume other subdivisions and communities are just about there as well.

Wildfire risk remains high to very high over much of the area today and again tomorrow. We may see some modest improvement in that next week with slightly less wind. That would help (though the breeze has certainly helped make the evenings a bit more pleasant at least!).

So, today let’s focus on the chances we can maybe, possibly, potentially, perhaps, conceivably see some rain chances next week.

Today through Tuesday

Sunny, hot, breezy this weekend but a bit less next week, and highs in the low-100s and lows near 80 or in the low-80s. Each day. Today through Tuesday. Excessive heat warnings and/or heat advisories will be likely every day.

Yesterday was our 12th straight 100 degree day, as we hit 103° at Bush Airport. That’s Houston’s third longest streak on record. The next one to catch will be 14 straight days, set in 1980. The top streak of 24 days from 2011 will be challenging but the chances of eclipsing it surely are a good deal greater than zero. We still lag total 100 degree day records by a lot, however.

Beyond Tuesday

A lot of y’all have said our reports this week have been downright depressing. They have been! We’ve always promised honesty with you, and there’s been little sign of any real rain or “less hot” weather. So here’s the deal. I want to be optimistic about mid to late next week and some (modest) rain chances. But we’ve seen this happen more than once this year, where modeling sort of relaxes the pattern for a period and then it comes roaring back. So here’s our hint of optimism, but in reality, I would not be out buying umbrellas.

High pressure over the next 5 days is going to anchor near or over Texas. But after about next Tuesday, the high retreats into the Southwest as a pretty aggressive trough digs into the Great Lakes. This “weakens” the ridge over Texas some. By next Friday, any goodwill we have garnered is gone and it’s back to heat, but for those few days at least we might weaken things enough to at least allow for sea breeze showers each afternoon. Here’s a forecast upper level map on Thursday afternoon.

That’s only going to give us about a 20 to maybe 25 percent chance of afternoon showers. But that’s about 20 to 25 percent higher than right now. So I want to be realistic about the chances of any change (which is to say, it’s quite low), but I also want to try and keep us somewhat positive! We’ll see how this holds up over the weekend. Meanwhile, please stay cool and hydrated this weekend!

The excessive heat warning is back for most inland counties in the Houston area, including Houston-proper, with high temperatures expected firmly above 100 degrees. Yesterday was 101 at both Bush and Hobby, but yesterday was also notable in that the 83 degree low temperature at IAH matched our warmest low of 2023 and ties with 10 other dates for the second warmest low temperature on record there.

Additionally, Eric noted that yesterday would be a bit breezier, and it was. I was out on the east side of the region for work, and I have to tell you, those onshore winds were ripping. Hopefully that provided a little relief in spots. With high pressure sitting over us, and a stalled out front across the Red River, we actually are ending up in a situation that’s a little reminiscent of springtime, albeit with August temperatures. Low pressure formed over northwest Texas, and the gradient (or difference in pressure) between that low pressure and surface high pressure off to our south and east has led to windier conditions than we’ve seen in some time.

For Bush Airport, yesterday was the windiest day (based on average wind speed) since May 12th!

Factor in winds and drought and dry air during the afternoons, and we continue to have a high risk of wildfires across a large chunk of Texas, including the Houston area. We’ve seen some sudden and erratic fire behavior at times from new starts in central Texas as well as in Louisiana. Today’s fire outlook from the Texas A&M Forest Service continues to show high or very high risk of wildfires in the northern half of the Houston metro area. Please use extreme caution across the entire area. The last time it was this windy in the area, the soil had a good deal of moisture. Things have really dried out since.

As far as the weather goes, it remains a pretty easy forecast.

Today and Friday

Sunny, hot, and breezy with highs in the low-100s and lows in the low-80s.

Saturday and Sunday

Sunny, hot, and breezy at times, with highs in the low-100s and lows in the low-80s.

Monday and Tuesday

Sunny and hot, with highs in the low-100s and lows near 80 degrees.

There is nothing in our models right now that makes us optimistic for a change in our pattern over the next 7 to 10 days. The good news is that one day it will change. We just can’t tell you what day right now.

In all seriousness, please take it easy and check on vulnerable friends and family. And once again, please use caution with respect to fire danger. Wildfire risk has not been to this level of seriousness in these parts of Texas since 2011.

I want to start my Friday post on a positive note. For weeks it feels like, Eric or myself have been writing these posts saying “we honestly don’t know when this excessive heat is going to meaningfully end.” We all know it will still be hot; it’s August after all, but it would be nice to tone it down just a little and maybe bring some rain back into the picture.

Eric has alluded to some potential change at the end of posts the last day or two, and I think we’re starting to build some legitimate momentum for this to occur. As we move beyond days 7 to 10, we begin to see a bit of a shift in the pattern showing up in modeling. High pressure in the Southwest & Texas shifts just a little more to the west. Heat is established now in the northwestern corner of the country and parts of Canada.

What this may do is help carve out a trough in the eastern half of the U.S. This is helpful for us in Texas because if this happens, it sort of puts us in the middle. Meaning, yes, it will still be fairly hot here, but not at record levels (think upper-90s instead of low-100s). It would also probably allow for the door to the Gulf to swing back open again and bring back at least some rain chances.

This is good news because drought continues to gradually worsen in Texas. The Climate Prediction Center hazards map for August 11-17 shows that many areas in Texas are at risk for “rapid onset drought.”

What exactly are they talking about? Essentially “flash drought,” which is what happened in the Central Plains in 2012. Drought quickly goes from kind of bad to very bad very fast. This can have implications on agriculture, water supply, lake levels, etc. We really don’t want to be dealing with a flash drought here, but given the recent issues with wildfire flare-ups, as Eric noted yesterday, we may already be descending that path.

This is why we are really, really hoping that what we see beyond day 10 can hold. Fingers crossed.

Today and the weekend

Meanwhile, yes, it’s more of the same. More heat. More advisories or excessive heat warnings. More humidity. Drink more water and try to limit outdoor exposure when possible. Please also check on your neighbors. There have been a couple instances of showers popping up in recent days in central part of the Houston area. That could happen again today or tomorrow, but consider yourself extremely lucky if it does.

Summer to date, we’ve just tied 2009 for the 3rd hottest on record in Houston. We are only a couple tenths of a degree behind 2011 for 2nd hottest, and over the next 7 to 10 days, we’re likely to go neck and neck with that summer. I suspect 2011 will pull away in the end, assuming our pattern does change some later in the month.

Next week

Copy and paste. More heat and more sun. Look for a slight rain chance Tuesday afternoon and then maybe again by Friday. Any changes that take place in the weather pattern would not materialize before next weekend. So buckle in.