Matt Lanza

In brief: Rain chances return to Houston today, and they look to hang with us off and on through next week. While rain accumulations look mostly minor, there could be a few spots that see a couple inches of rainfall. A warming trend kicks off, with a lot of 70s and even an outside chance at 80 degrees in a few spots. Cooler weather arrives again later next week.

Today

Radar shows very, very light precipitation across the area this morning, with the exception of a few steadier showers down in Matagorda County. As the day goes on, look for more and more of this activity. Most people probably won’t see heavy rain, but a couple downpours will be around. Temperatures and humidity will do the slow climb today with cloud cover. Look for low 70s south and mid-60s north today. It’ll also be a touch breezy at times today.

Saturday

Drizzle and showers will continue tonight and into tomorrow. As we build up more warmth, humidity, and available moisture tomorrow, we could see some thunderstorms as well. It appears that’s most likely north and west of the city, closer to the front. But don’t be surprised to hear some thunder on Saturday anywhere. Temperatures will be tricky. Ahead of the front, we should see widespread 70s for highs and even a puncher’s chance at 80 degrees down toward Victoria or Bay City. But as the front nudges into parts of the area, even if it stalls out, places like College Station or Huntsville could slip back into the 60s tomorrow afternoon. Dress for spring south and maybe two seasons north.

Sunday

The cold front backs up to the north later this weekend, and this should allow for low clouds and/or patchy fog to make for a dreary-at-times Sunday. There will be drizzle and some passing showers around, but Sunday may have the best chance at some more dry periods. We’ll see highs in the 70s everywhere, with at least a few 80s possible south of I-10.

Monday through Wednesday

Like a pendulum, the front swings back toward us on Monday. This should bring back a chance of showers and thunderstorms to the area. The front may again stall, this time closer to Houston, which may actually give the metro area a better chance of showers or storms Monday than we see tomorrow. Whatever the case, the front will again retreat Tuesday before a stronger front hits the area on Wednesday.

Total rainfall has been mostly a bummer lately, and model forecasts heading into this event are also somewhat tantalizing, with the Euro for example showing north of 3 inches of rain in northwest Harris County between now and next week. So, with that in mind, I would say to expect a quarter to half inch in most spots. There will be “lollipops” of 1 to 3 inches, but if recent history is a guide they will be an exception, not the rule.

Temperatures will be in the 70s to near 80 again on Monday, though as the front approaches, we could see temporary cooler air filter in north and west of Houston. Tuesday may be a hair cooler as the air mass tries to recover some. Let’s call it low-70s for highs for now. Then on Wednesday, we’ll see a slight bump up in humidity and morning lows before the front hits.

Late next week

Thursday should see temps back into the 40s for lows and struggle into the upper-50s for highs. It’ll stay cool into the weekend with temps in the 30s and 40s for lows and 50s and 60s for highs. A warming trend may occur into Christmas, but to what degree and whether it comes with rain or chances for another front is still to be determined.

In brief: Houston gets to bathe in near-80° weather today before a cold front tonight sends us back to autumn and early winter with the coldest air of the season so far arriving. A light freeze is possible north and west of the city on Tuesday night and Wednesday night before we bring back rain chances and warm up this weekend.

Today

After a dreary weekend, especially Sunday, we will start the week on a bit of a nicer note. Look for some sunshine today mixed up with cloud cover. Let’s call it “decreasing clouds.” We don’t expect any rain, but what we do expect is warmth. Warm air getting pumped in from the southwest will allow our high temperature today to flirt with 80 degrees! This will be a few degrees shy of the 85° record from 2021. Still, for the warm weather lovers, enjoy. It changes again tomorrow.

Tuesday through Thursday

A cold front is going to push through the region tonight, ushering in a much colder air mass for Tuesday. Despite sunshine, morning lows in the 40s and 50s will be sluggish to warm up on increasing northwest winds Tuesday afternoon. We’ll manage 60 or the low-60s at best. Then, the coldest mornings of the season so far will follow on Wednesday and Thursday. We should see lows in the 30s in the city, near freezing in some of the northern and western suburbs, and at or below freezing just north and west of there.

Wind gusts on Tuesday evening will be 25 to 35 mph, strongest at the coast. We should see sunshine and highs in the 50s or around 60 degrees on Wednesday. Thursday will probably see increasing clouds with morning lows similar to Wednesday morning and afternoon highs in the low to mid-60s.

Friday and the weekend

Warmer temps will try to work back into the region Friday, Saturday, and Sunday, with highs approaching the 70s again. Morning lows will step up into the 40s and then 50s, if not low-60s this weekend as well. Unfortunately, it’s looking a bit dreary again. Despite the off and on rain this weekend, almost all the area saw merely a quarter to half-inch of rain. So it was not a lot. This coming weekend could see even a bit less than that. So for now, let’s open the bidding at a quarter-inch or so on average this weekend, especially given how recent rains seem to have underperformed. We’ll fine tune things as we get closer.

Our next meaningful cold front looks to arrive sometime midweek or late week next week. We are still a couple of days away from having a solid indication on Christmas weather, so let’s wildly speculate instead. With colder weather late next week, we could see a warming trend leading into the holiday but exactly how warm is TBD. More to come.

In brief: Will Houston manage another freeze this winter? We discuss what’s been in the news. Rain totals this weekend seem to have backed down some but there will still be some serious temperature and humidity changes into Monday before the coldest air of winter so far arrives next week. A light freeze is possible by Thursday morning outside the city.

Will Houston see a serious freeze this winter?

In the news lately has been ERCOT’s reported prediction of a “greater than average” chance of an extreme cold event this winter. Full disclosure: I know Chris Coleman personally, and he’s a solid forecaster and a good guy. ERCOT uses the fact that 5 of the last 8 winters have seen an extreme cold snap in Texas, as well as the fact that the majority of our extreme cold events since 1950 have occurred in La Niña winters. Interestingly, many of those cold snaps have occurred in otherwise mild winters, including 2016-17, our warmest Texas winter on record! So are these events indeed happening more frequent, or is this perhaps the law of averages catching up with us?

Going back to the 1800s, Houston has officially hit 21° or colder a total of 124 times. As noted, we’ve done it in 2024, 2022, 2021, 2018, and 2017. So it’s been a busy stretch, in addition to a few other instances in 2014, 2011, and 2010. But prior to 2010, we had last done this in 1996. So we went 14 years without hitting it once before racking up a bunch. The only real comparable stretch to that gap was 1918 to 1928, when we got shut out of sub-21° nights. You’ll notice from the data above that while the quantity of years seeing extreme cold seems to have revved up some in recent years, the duration of these cold spells seems to have shortened. And you see fewer winters with multiple extreme cold spells. Some of that is urban heat island effects due to Houston’s enormous growth. Some of that is the warming Gulf of Mexico in our backyard and/or climate change. But mostly, it’s actually kind of typical to have this type of cold in Houston every few winters. Yes, it’s been busy in recent years. But I think that’s more a consequence of having experienced few major cold snaps between 1996 and 2018 more than anything.

So what are we saying? It probably makes sense to prepare every winter for a pop of extreme cold. It may only last a few days, but it can obviously cause problems. And to the original point about this winter: Given the La Niña in place, there should be an ample reservoir of cold built up in Canada by later January and February. It’s a weak La Niña to be sure, but it should still allow for more Canadian cold than in a typical winter. If the wrong setup comes along to dislodge that into the Plains, that’s when we could experience a pop of extreme cold this winter. Putting all this together, it’s not at all illogical to state we have a greater than normal chance of experiencing a brief extreme cold outbreak this winter. Coleman also mentioned in his ERCOT presentation that for cold weather, “This is like a tornado watch. Doesn’t mean a tornado is going to happen. It means conditions are there.” And I think that’s the key takeaway from all this. And it’s also something Eric noted in our commentary on winter back in early November.

On to the weather, of which there is a good bit to discuss this weekend.

Today

We should close the week out on a cool but benign note. There are some clouds pushing northward across Matagorda Bay, toward Wharton and west out toward perhaps Columbus or Sealy. But aside from that, sun and some clouds rule the day. A chilly morning in the 40s should warm deep into the 50s this afternoon. I would not entirely rule out a passing shower before the end of today, primarily between Matagorda Bay and Columbus or perhaps up toward College Station. Nothing big, just don’t be shocked if you feel some raindrops.

Saturday

Tomorrow will be our transition into a temporary warm pattern, priming us for a wet Sunday. Look for clouds and kind of damp, raw weather on Saturday as humidity levels increase. We’ll manage the mid-50s or a bit milder for highs but between a few showers, the cloud cover, and that rising humidity, “clammy” may be an appropriate descriptor. Look for some low clouds or drizzle in spots in addition to passing showers here or there.

Sunday

More numerous showers seem likely on Sunday across most of the region. The area is in a marginal risk (level 1/4) for excessive rainfall. At this point we think that the only flooding would be typical ponding issues on area roadways (ex: frontage roads) or in small areas that see brief street flooding due to downpours. Modeling seems to have backed down on the amount of rainfall to expect and rain totals have generally been cut as a result.

The best ingredients to sustain rainfall will be to our east, so places like Beaumont or Lake Charles will be more apt to see more rain it seems. Temps will surge on Sunday though as warm air floods in off the Gulf, along with breezy conditions. Look for highs well into the 60s.

Next week

There will be a disconnect between this weekend system and the incoming cold front, so Monday falls firmly in the warm category. We’ll manage highs into the 70s with a good bit of humidity. The cold front hits Monday night, which as of now looks fairly dry. It appears a secondary front arrives Tuesday afternoon. The combination of the two will allow for Tuesday’s temperatures to drop into 60s for highs and allow for the coldest air of the season Wednesday night.

Some places will approach freezing Wednesday night and Thursday morning, primarily north of Houston and outside the city. Daytime highs on both Wednesday and Thursday will limp into the upper-50s or low-60s at best. A somewhat more sustained warm up may follow next weekend and into the week of the 16th. More to come.

In brief: Periods of sun and clouds will be with us in Houston through Monday. Temperatures look cool and very autumn or early winter-like with generally 60s for highs and 40s for lows. A temporary warming trend and rain chances return next week.

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Today through Monday

Most of the next few days will be quiet, with only some subtle changes ongoing in the background. For one, today is much sunnier than most of yesterday was, except near the coast and south of Houston, where clouds are still a bit stubborn. But overall, expect more sunshine today. Saturday should see increasing cloud cover, while Sunday may be a lot like today with clouds clinging to southern areas and even perhaps a passing shower down there. Monday looks partly to mostly sunny.

High temperatures will generally be in the 60s on average. A couple days may struggle to get out of the 50s north of Houston and up toward the Piney Woods. Likewise, lows will be in the 40s in Houston and the metro area most nights, with some 30s north of Houston and perhaps 50s south and near the coast. All in all, it will be a fine few days to check out Galaxy Lights, Radiant Nature, Zoo Lights, or any of the other outdoor displays around the region!

Tuesday, Wednesday, and beyond

The weather pattern changes somewhat considerably late Monday and Tuesday as warmer air begins to rush back in off the Gulf. First, we’ll see some cloud cover. But by Tuesday afternoon, we should see scattered to numerous showers and/or thunderstorms in the area. That will continue into Wednesday, along with a pretty healthy warm up. Expect highs back up into the 70s by Wednesday or Thursday.

It does appear another cold front is going to end this warming trend around Friday next week. More on that after the weekend.