Eric Berger

Good morning. And it’s a chilly one, with temperatures in the 30s across the entire metro area away from the immediate coast. Some locations, such as Conroe and Cleveland, are even experiencing a light freeze. Our weather will now turn warmer, with daily high temperatures that should more or less remain in the 60s for the foreseeable future. Other things covered in today’s post: the potential for rainfall on Friday and Saturday of this week, and our first Christmas Day forecast below.

Monday

For anyone getting going this morning, it’s a cold start. However, at least those winds are light, as as they’re coming from the east we’re going to see a warmer flow today. With sunny skies we can expect high temperatures to climb into the low 60s. Low temperatures tonight will be more moderate, generally dropping into the 40s for Houston, with slightly cooler conditions for outlying areas.

Tuesday, Wednesday, and Thursday

With high pressure off to our east, we can expect a generally easterly flow for the middle of this week. What does that mean? Tuesday will start out mostly sunny, but we’ll see increasing cloud cover through Wednesday and Thursday. Highs each day will be in the 60s, although there will be some variation depending on cloud cover during the afternoon hours. Overnight lows will generally drop into the low 50s. So all in all, pretty moderate weather for December. One thing to note: If you live on the coast, tides will be higher than normal due to the persistent easterly winds.

Friday and Saturday

We’re going to see a favorable setup for rainfall this weekend as an approaching front combines with a reasonably moist atmosphere. The details are still a bit hazy, but Friday will be mostly cloudy, with a modest chance of showers in the morning, and higher odds during the afternoon and overnight hours. The front itself should move through Friday night, at some point. But it won’t immediately scour all of the moisture out of the atmosphere, so some light, lingering showers will be possible during the day on Saturday. All told I expect the region to pick up 1 to 3 inches of rain through Saturday night. Highs on Friday will be in the 60s, and on Saturday likely in the 50s.

Next week

Sunday, at this point, looks to be partly to mostly sunny, with highs in the low 60s. So that’s probably the best day for outdoor activities this weekend, if you can swing it. I’d expect to see partly sunny skies and highs in the 60s through at least the middle of next week, with low to non-existent rain chances. Nights will be chilly, mostly in the 40s.

Christmas Day forecast

We’re still 14 days out from the Christmas holiday, so a specific weather forecast is necessarily going to be stuffed with caveats like a stocking. It looks like we’ll continue to see fairly chilly nights through the middle of next week. By around Dec. 21, however, we should start to warm up. So what happens after that? Understandably, there is not a strong signal in the models right now, but if anything they’re leaning toward slightly warmer weather through Christmas Day, with highs perhaps in the upper 60s to lower 70s. At this point we absolutely cannot rule out significant rainfall, but there’s no real signal for strong showers.

Good morning. Houston faces a couple of warmer days before a strong cold front comes barreling through on Saturday afternoon and evening. This front, accompanied by a line of showers and thunderstorms, will quickly drop temperatures and humidity. This will set the stage for winter-like conditions for much of next week. Monday morning looks especially cold, with a light freeze possible for some inland areas outside of Houston’s urban core.

Friday

Today will be warm for December, with high temperatures in the upper 70s and mostly cloudy skies. We’ll see a consistent southerly flow all day, with winds at the surface of about 10 mph. Rain chances also return, with perhaps a 30 or 40 percent chance of showers this morning into the early afternoon hours. While these will mostly be light showers, it’s possible that one or two thunderstorms might pop up. Low temperatures tonight will only drop to around 70 degrees in Houston, with slightly cooler conditions for outlying areas.

Saturday

Another warm day, with highs in the upper 70s. A few locations may hit 80 degrees with partly sunny skies. Humidity levels will be pretty thick. The front should reach areas north and west of Houston, such as Katy and The Woodlands, between 4 and 6 pm, and push off the coast between 7 and 10 pm. The odds of severe weather now look quite low, but it’s still possible that a few storms will accompany the front as it pushes through. Most areas will see a few tenths of an inch of rain, but a few isolated locations could pick up one-half inch, or more. Much drier air moves in after the front’s passage, with brisk northerly winds gusting to 35 mph or higher Saturday night into Sunday morning. It will be especially blustery along the coast. Lows will drop into the 40s.

Sunday

This will be a cold, sunny, and breezy day with highs in the upper 50s. Winds will gradually back off during the day, becoming fairly calm by the evening hours. These clear skies and light winds will set the stage for ideal cooling overnight, with lows dropping into the 30s in Houston. For locations in Montgomery and Waller counties, a light freeze is possible—the first of the season.

Next week

Most of next week looks fairly typical for December. We’ll see highs generally in the 60s, with lows in the 40s and 50s as well as partly sunny skies. Some rain chances return by the end of the work week. After this Saturday, I’m not sure when we’ll see highs in the 70s again.

Have a great weekend, everyone, and stay warm on Sunday night!

Before getting into the forecast this morning, I wanted to share a couple of observations about Houston’s weather of late. Let’s start with the acorns. Oh, the acorns. They’re still falling. I went back and checked this morning, and I first wrote about the mast year for acorns we’re experiencing back on November 2. That’s five weeks ago, and they were already thick as thieves by that point. If there’s a naturalist, arborist, or other expert out there who can quantify this year’s acorn crop I’d love to hear about it. I just can’t believe they’re still falling. Will they ever stop?

The other thing one cannot really miss, if you’re outdoors during the early evening hours, is the grand sunsets we’ve been experiencing. Matt has been noticing them too, and says that they’re due to a thin layer of cirrus clouds. These are the wispy clouds high in the atmosphere, which are formed entirely of ice crystals, and often indicate the presence of the jet stream. You can see these clouds in the lovely photos below, sent in by readers. In the case of our recent sunsets, there are enough of these clouds to produce vivid colors by scattering some light, but not so many that they block out too much of the Sun’s last, dying rays. We’re likely to see more such sunsets this winter with an active jet streak.

Alright, on to the forecast, which is somewhat of a mixed bag with a lot of people undoubtedly having pre-holiday plans this weekend.

Wednesday

Today should be a pleasant and mostly sunny winter day. Look for highs in the mid-60s, with light easterly winds. Those winds will begin to turn southeasterly tonight as high pressure near Texas shifts further to the east. We should still see one more cool night, however, as lows drop into the upper 40s for most of the Houston metro area, and lower 50s closer to the coast.

Thursday

Southerly winds should become more pronounced on Thursday, and we’ll start to see some moisture return to the atmosphere. This may result in a few clouds as highs nudge up to around 70 degrees. With a warmer, southerly flow in place lows on Thursday night will probably only drop to around 60 degrees. A few very light, scattered showers may be possible overnight.

Friday

This will be a warmer and more humid day, with highs in the mid-70s and a mix of sunshine and clouds. Some very light showers will again be possible due to the atmospheric moisture, but I expect them to be rather scattered. Temperatures on Friday night will be downright warm, only falling into the upper 60s for most of the region.

Saturday

Like many of you, probably, my family has some outdoor plans during the daytime on Saturday and the timing of a front is not making for easy planning. While there’s still not great consistency, the forecast models are trending slightly later with the frontal passage, probably putting it some time during the afternoon hours. So here’s what I think I know. Saturday morning will start out warm and muggy, and much of Houston may get into the mid- or upper-70s. At some point we’re going to see a storm system, perhaps an intact line of storms, perhaps a broken line. I don’t feel confident yet in saying whether this will occur during the late-morning or afternoon hours yet. But by or before sunset these storms should clear the area, with much drier and colder air moving in. I’m not concerned about rainfall accumulations, as I expect most areas to receive perhaps 0.5 inch or less, but we can’t dismiss the possibility of some of these daytime thunderstorms becoming severe due to the somewhat unstable air mass. Our confidence in the forecast will increase during the next day or two as we get within the realm of higher-resolution modeling.

Sunday

Overnight lows will drop into the 40s heading into Sunday morning, with gusty conditions. Wake-up temperatures on Sunday morning will “feel” like they’re in the 30s due to these winds. So bundle up if you’re going to be out and about. Sunday’s high temperatures will likely only reach the upper 50s even with lots of sunshine. Absolute temperatures on Monday morning will be even colder, probably down to around 40 degrees in Houston. But with less wind they’ll be more tolerable.

Next week

Pretty much all of next week should remain on the chilly side, with highs in the 60s and lows in the 40s. There’s no sign of a warm-up in the near term, friends. Maybe don an ugly Christmas sweater early?

Good morning. Houston faces a couple of more chilly nights before we warm up briefly heading into the weekend. Unfortunately I still do not have too much confidence in the forecast for Saturday, which will see the passage of a robust cold front at some point, and harbors the potential for some storms. After the front’s passage we’ll be much colder on Sunday, and for pretty much all of the next work week. Also, at the end of today’s post, I’ll have a few words to wrap up the 2023 Atlantic hurricane season.

Tuesday

We’re starting off chilly this morning, with lows generally in the 40s for most of Houston. Winds are generally light, and will remain so even as a reinforcing flow of cooler and drier air moves in today. It should be a pleasant day, with highs near 70 degrees and partly to mostly sunny skies. Low temperatures tonight will again drop into the upper-40s for most of the Houston area, with cooler conditions inland, and a bit warmer conditions near the coast.

Wednesday

A sunny day, with temperatures a bit lower in the mid-60s due to the influx of cooler air. Winds will gradually shift from the north to the east, heralding the beginning of an onshore flow. This will eventually lead to warmer and more humid weather, but lows on Wednesday night should still drop into the upper 40s for most.

Thursday

Skies will turn partly cloudy as atmospheric moisture levels rise. Winds will also be more noticeable, coming from the south at about 10 mph, but with higher gusts, perhaps up to 20 mph. Look for highs around 70 degrees, with lows only dropping to around 60 overnight.

Friday

This will be the warmest day for awhile, with highs ticking up into the mid- to upper-70s, with a mix of sunshine and clouds. With dewpoints in the 60s, it will feel a bit sticky outside, but nothing too crazy. Lows on Friday night will only drop into the mid- to upper-60s.

Saturday

The forecast for Saturday remains in flux. What we know is that a cold front, probably with an attendant line of showers and thunderstorms, will move through. But that’s where the certainty ends. First question is when on Saturday. A passage earlier in the day, by or before noon, would mean less daytime heating for the front to work with as it pushes through. So this means less rain, and potential for severe storms. A later front, during the afternoon hours, means an increased potential for more rain and stronger storms.

Until there’s some clarity on the timing, I’m afraid there’s going to be a lot of uncertainty about temperatures, rainfall, and winds on Saturday, particularly during the middle of the day. (In terms of rainfall amounts, I would not be too concerned. Due to storm movements most areas will probably receive less than 1 inch). However, after the front moves through we can be confident that rain showers will end fairly quickly, skies will clear, and northerly winds will blow, gusting to perhaps 30 mph or higher. Saturday night, after the front’s passage, will be cold, with lows dropping into the 40s.

Sunday and beyond

Sunday will be sunny, clear and cold. It’s possible that high temperatures do not even reach 60 degrees. Northerly winds will continue, although they should slacken some during the daytime and evening hours. Lows on Sunday night will again drop into the 40s, and possibly even colder area-wide away from the immediate coast.

Most of next week should remain fairly winter-like, with highs in the 60s and lows generally in the 40s. Some rain chances will return during the middle of the week, but my confidence in likelihood and amounts is fairly low. At this point I don’t believe we’re looking at a substantial warm-up heading into next weekend, so viva la fría!

Atlantic hurricane season

We told you back in late September that, effectively, hurricane season was over for Texas. And indeed it was. But now the 2023 season is over for the rest of the Atlantic basin as well. Over on our companion website, The Eyewall, Matt has written a synopsis of what happened this year. It turned out to be an active season, as Matt concludes: “Suffice to say, 2023 will go down as one of the most active El Niño hurricane seasons ever recorded. That’s a little concerning given that an El Niño of this magnitude is usually enough to mitigate things. That only partially happened this year, in part due to the extreme warmth in the Atlantic.”

I want to thank everyone who read and shared The Eyewall with others this season. We’ll continue with occasional posts during the offseason, about extreme weather affecting the United States, before resuming full-time coverage for the 2024 Atlantic hurricane season.