Eric Berger

In brief: Today’s post explains why boring and calm weather in August is the perfect ideal for Houston. This will never be a month for nice weather. But it is often a month for nasty weather. Fortunately, this year, we’re not seeing that. (So far).

August doldrums

A lot of terrible, awful, no good weather can happen in August along the upper Texas coast. Historically this is when we have seen our most terrible heat. I think about the summer of 2023, when the average daily high temperature for August was 103 degrees. This is the month when we often seen our most entrenched high pressure systems and deepest droughts. Conversely, August and September are when the region is most vulnerable to powerful hurricanes. So we can see not just droughts but flooding rains. We often go from drought to flash flooding in a matter of minutes due to the nature of tropical rainfall. Fun times.

So when I look ahead to our forecast over the next 10 days and see highs generally in the low- to mid-90s, with enough of a splash of rain—but not too much, mind you—to keep the drought at bay, I’m happy. It may be boring to forecast. It may mean no one is reading about, or really cares about the weather. But boring weather in August beats almost any conceivable alternative. So I say, with pride, that today’s forecast post is boring.

Thursday and Friday

The end of the work week will bring some of our warmest weather. Daytime highs will push into the mid- to upper-90s (for inland areas), with mostly sunny skies. We will see some showers offshore during the morning hours, and I expect these to develop over land later this morning and during the afternoon with daytime heating. Generally I expect about 10 percent of the region to see moderate to heavy rains, another 20 percent or so to see light rain, and then the rest of us nothing. So these will be very much hit or miss rains. Winds will be light, generally from the southeast. Overnight lows are very warm and muggy.

Saturday and Sunday

As the high pressure system over the Southwestern United States retreats a little bit this weekend, we will see slightly increased rain chances. Overall daily coverage will be about 40 percent, and again these should be very much hit or miss showers, with a few isolated pockets of heavy rain, and most areas seeing much less. A few more clouds should help limit high temperatures this weekend to the low- to mid-90s. Which, for the deepest dog days of summer, is not half bad.

Next week

This pattern of boring weather: highs generally in the mid-90s, low-end daily rain chances, and plenty of humidity, should continue for the majority of next week. It’s not glamorous, but for me in August, in Houston, every day is one of survive and advance toward fall. And we’re getting there folks.

In brief: This post discusses our relatively mild start to the month of August, which is a nice change from some of our recent summers. And really the forecast does not offer much variability, with highs likely in the low- to mid-90s for awhile with a splash of daily rain chances.

It could be worse

The average high temperature during the sizzling first week of August, 2023, was 102 degrees Fahrenheit. (I felt a shudder as I wrote that). Last year it was 97.5 degrees. This year, so far, we’re running at 93.8 degrees. This is not exceptionally cool, but it is a little bit below the normal high for this time of year (96 degrees). As Matt has noted the moderate daytime temperatures we’ve been seeing this summer have been offset by extremely warm nights, but nevertheless it sure feels nice to go through what is typically the hottest time of the year and have days that aren’t at or near record high temperatures.

And I don’t want to jinx anything, but it looks like we should remain solidly in the low- to mid-90s through at least the middle of the month as high pressure appears unlikely to build directly over the region anytime soon.

Wednesday

We remain on the edge of a very potent high pressure system anchored over the Southwestern United States, and that will continue to bring warm, mostly sunny days with a low-end chance of showers and thunderstorms. With this pattern we should continue to see high temperatures in the mid-90s for areas along and north of Interstate 10, and lower 90s for areas closer to the coast. Rain chances will be on the order of about 30 percent daily, with totals probably at the higher end toward the coast, and lower further inland. Humidity remains high, with light southeasterly winds. Nighttime temperatures will struggle to fall much below 80 degrees.

Thursday and Friday

These days will see a similar pattern, although daytime highs should be 1 or 2 degrees warmer, with some inland areas potentially reaching the upper 90s. A chance of showers is possible during the afternoon along the sea breeze.

Saturday and Sunday

The song remains the same heading into the weekend, although daily rain chances may nudge up to 40 or even 50 percent closer to the coast. These showers are unlikely to last too long, and for most locations will only bring a tenth of an inch of rain or two. For the most part skies should be sunny, with high temperatures in the low- to mid-90s.

Next week

Honestly, at this point not much change appears to be in the forecast for next week. If we’re getting through August with temperatures in the low- to mid-90s and the occasional shower to keep things green, then we’re doing August in Houston about as good as one can.

Tropics

Dexter remains a weak tropical storm that is moving away from land, so no concerns there. Two other systems have a chance to develop, and one of them may bring increased rain chances to the southeastern United States over the next week. The Gulf looks clear for now, but we’re just about to begin a pattern of tropical systems forming in the “main development region” of the tropical Atlantic, and these will have a better chance of moving westward toward the Gulf, and potentially entering the body of water on our doorstep. Nothing is imminent, however. We’re just getting close to that time of year.

In brief: Rain chances will dial back, and temperatures will go up this week. But really, for this time of year, the heat could be significantly worse in Houston during the daytime. By the weekend much of the area could drop back into the lower 90s. Also, we discuss the likelihood of increased tropical noise.

Tuesday

There are some scattered showers along the coast this morning, and they should continue to push inland over the next couple of hours before dying out around Interstate 10. Later today mostly sunny skies should prevail across the Houston region, allowing high temperatures to push into the low- to mid-90s. Winds will come from the east at 5 to 10 mph. Low temperatures tonight will be in the upper-70s for most locations.

Wednesday, Thursday, and Friday

There will not be much variability across Houston for the remainder of the week. A stout ridge of high pressure has established itself over the southwestern United States, but our area remains on the edge so we won’t experience the full force of its impact. Essentially, then, for the remainder of the week we are going to see mostly sunny days with high temperatures in the mid-90s, with inland areas possibly at risk of seeing the upper 90s. Humidity will, of course, be rather high. Each day will bring a slight chance of showers along the sea breeze, with higher chances of rain (maybe 30 percent) closer to the coast whereas inland areas see perhaps a 10 percent chance. These are the dog days of summer, and by golly they are going to feel like it. Please note it could be worse, however. Record highs for this time of year in Houston are generally in the 104 to 106-degree range.

Saturday, Sunday, and beyond

High pressure retreats a bit this weekend, and this will have a very subtle effect on our weather. Daily high temperatures will probably go a bit lower, so something like low- to mid-90s for much of Houston. And rain chances may go up slightly this weekend. Skies should still be mostly sunny, but there will be a chance for brief, passing showers on the daily. This overall pattern looks to hold at least into the middle of next week.

Here comes the hurricane hype

As we noted yesterday, the Atlantic tropics are starting to heat up. And the seven-day outlook from the National Hurricane Center (shown above) indicates that. At present there are no threats to the Gulf, but looking at the longer range models there appears to be the potential for another tropical wave (which is still well over Africa, and not reflected in the map above) to move off into the Atlantic and follow a more westerly course over the next two weeks. This might eventually track toward the Gulf, but it’s a long ways off and there are a lot of ifs and maybes.

Nevertheless, you can probably expect to see a lot of noise from social media-rologists about this and other potential threats to the United States over the next two months. But right now, here’s all we can really say for sure: The Atlantic is heating up, and if Texas is going to be threatened by a hurricane, it will almost certainly happen in the next eight weeks. When there are more specific threats to discuss, you can rest assured that we will discuss them.

In brief: Houston will see a decent chance of some showers and thunderstorms today, but beyond this we should remain hot and mostly sunny, as is often the case in August. Also typical for August is an increase in tropical activity across the Atlantic. Which is what we are presently seeing.

Right on cue, the tropics heat up

After a flurry of tropical storms in late June and early July, the Atlantic tropics were rather quiet for the last three weeks. That has changed over the weekend with the formation of the fourth named storm in the Atlantic (Dexter, which is not a threat to land), and development of a couple of additional “blobs” to watch.

First of all, some numbers. Dexter is the fourth named storm this season, and in some sense we are ahead of schedule. Historically, the “D” storm forms on August 15th. This makes it sounds like it has been a busy hurricane season, but measured by a more accurate barometer, we have seen a slow start. Our preferred measuring stick for seasonal activity is “accumulated cyclone energy,” which factors in both the duration and intensity of tropical storms. By this metric we are running at about 20 percent of normal levels.

The graphic above highlights two things. One, we are off to a relatively slow start this year. But more importantly, we remain very early in the game. The vast majority of the Atlantic season’s activity remains ahead of us, with August and September as typically the busiest months. So yes, it’s nice to have had a quiet start to the tropics season in Houston. But it does not mean a whole lot.

When we look at the tropical forecast for the next week or so, there are no distinct threats to the Gulf of Mexico. And I don’t want you to focus on any specific storms. However, what is clear is that we are entering prime time for the Atlantic season, and the background conditions (including the upper air pattern) are starting to become much more supportive of tropical storms and hurricanes. Bottom line: we really need to pay attention to this stuff for the next eight weeks or so. We will cover every conceivable threat to Texas here, and be sure and check out The Eyewall for coverage of storms across the tropical Atlantic.

Monday

Showers and thunderstorms have developed offshore this morning, and I think we’ll see a healthy chance of similar storms developing over inland areas this afternoon. The overall pattern is not supportive of widespread storms, but I do think there will be some scattered but impactful activity this afternoon and early evening in the metro area, with perhaps slightly higher chances west of I-45. Some areas may pick up 1 inch of rain or more, with most of the region staying dry. Otherwise expect mostly sunny skies this afternoon with high temperatures generally in the low- to mid-90s. Winds will be light outside of thunderstorms, from the east. Lows tonight will only drop into the upper 70s.

Tuesday, Wednesday, and Thursday

A fairly robust ridge of high pressure will build over the southwestern United States this week, but Houston will fall on the eastern periphery. Essentially, this means that we will see typical August weather, with mostly sunny skies, highs generally in the mid-90s (with some upper 90s for far inland areas possible), and a low-end chance of showers during the afternoon along the sea breeze. Nights will be warm and muggy. As Augusts go, things could certainly be worse at what is typically the very hottest time of year in Houston.

Friday, Saturday, and Sunday

Not a whole lot changes as we head into the weekend. Skies remain mostly sunny, and I think most of us will continue to see daytime highs in the mid-90s. Rain chances remain low, but at about 30 percent daily, are definitely not zero thanks to the sea breeze. I don’t see much of a change in this pattern any time soon.