Warm until Wednesday, also we take our first tentative stab at a Christmas Day forecast

In brief: It decidedly did not feel like the holidays this weekend in Houston, and we’ve got a few more warm and muggy days before a front arrives to bring much more seasonal weather into the forecast. There will be plenty of drier air and chilly temperatures this coming weekend. But what of Christmas Day?

December is half over

Believe it or not, the month of December is half over. Until this weekend, the Houston region was experiencing fairly normal weather for this time of year. But highs this weekend were quite a bit above normal. In fact, Sunday morning’s low temperature of 66 degrees was a couple of degrees warmer than the typical high for mid-December. We’ll remain fairly warm and muggy until the arrival of a front on Wednesday afternoon or evening, which will bring cooler conditions through the weekend. As for the upcoming Christmas holiday forecast, I’ll make an attempt below.

Temperatures this weekend were out of family. (National Weather Service)

Monday and Tuesday

The first two days of this week will be much the same, with high temperatures in the vicinity of the upper 70s to 80 degrees. With sticky dewpoints and light southwesterly winds, each morning will also be a candidate for fog, especially in coastal counties. Skies will be partly sunny during the daytime, with nights muggy and only dropping into the mid- to upper-60s for most locations. There will be a chance for some (mostly) light showers each day, but they will be pretty isolated. All in all, not very festive.

Wednesday

But fortunately, change is coming. Wednesday will start out much the same as the previous two days, which is to say warm and muggy. Some time, probably during the afternoon but it could be earlier or later, a front will move down from the northwest. There is likely to be a broken line of showers, and possibly a few thunderstorms, with the front. However, at least half of us, and perhaps more, are unlikely to see much rain. Anyway, temperatures will drop pretty quickly after the front’s passage, so you’ll notice it. Houston should reach highs in at least the mid-70s before the front cools us down. Lows on Wednesday night will drop into the 40s for inland areas, and 50s for the urban core of Houston and the coast.

Saturday morning should be the coldest of the week with a reinforcing front. (Weather Bell)

Thursday, Friday, Saturday, and Sunday

The second half of the week looks to be mostly sunny and significantly cooler, with dry air. Thursday and Friday should be in the 60s, with lows around 50, and Saturday and Sunday a bit cooler still as a reinforcing push arrives. Lows this weekend should drop into the 40s in Houston, with the upper 30s possible for far inland areas. The last full weekend before Christmas should feel very holiday-like!

And what lies under the tree for Christmas Day?

Only a fool would try to make a point forecast for nine days from now, but I will step forward this morning to be the sacrificial fool. It’s pretty clear that we’re going to see a warming trend by Monday and Tuesday of next week. But how warm will we get?

AI-Santa is puzzled by the Christmas forecast as well. (Grok)

Right now the best ballpark guess for Christmas morning is temperatures somewhere in the 50s, with partly cloudy skies. High temperatures probably will get into the low- to mid-70s. Dewpoints don’t look crazy high, so right now I don’t expect a muggy day such as we experienced this past Sunday. By the middle of next week the pattern will be supportive of rain, but there’s no strong signal yet for any widespread rain on Christmas Day. All of this could, of course, change. But right now the outlook is for an at-least somewhat pleasant day.

Rain returns to the forecast in Houston, along with warmer weather through early next week

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’s forecast highs look similar to Saturday in most spots with a crack at 80 degrees south and 70s most elsewhere. (Pivotal Weather)

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.

Consider this a “high end” rainfall forecast for the area. Many places will remain in the quarter to half-inch range, but a few spots will see upwards of an inch or two if they get soaked by heavier downpours. (Pivotal Weather)

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.

Houston to go from flannel to breathable cotton as Jack Frost is forgotten

In brief: It’s a very cold morning out there across Houston, but temperatures will now be on the upswing, with balmy weather expected this weekend and into early next week. We’ll also see a smattering of rain chances throughout the forecast period, but nothing too crazy. We cool down later next week.

Thursday

It’s a rather chilly morning, with most of the Houston area in the 30s. A few inland areas, including Conroe and Cleveland, have dropped to 30 degrees or below. However, this is the bottom of the temperature valley for Houston, and we’re now going to ride the rails upward to a plateau of moderate days and mild nights through at least next Monday or Tuesday.

Nearly all of Houston is in the 30s this morning except the immediate coast. (Weather Bell)

For today, specifically, skies will be mostly sunny with high temperatures in the mid-60s. With southeasterly winds in place, we’ll start to see a more moderate flow, and lows tonight will only drop into the low- to mid-50s for much of the area. By this evening we should see at least some partly cloudy skies as moisture levels increase in the atmosphere overhead.

Friday

Expect mostly cloudy skies on Friday, with high temperatures of around 70 degrees. I can’t entirely rule out a few light showers, but for the most part I don’t expect any rain. Friday night will be warm, with lows only in the lower 60s, and a slight chance of rain.

Saturday

A cold front will drop down into Texas this weekend, but most likely it will stall north of the metro area. This will lead to partly to mostly cloudy skies on Saturday, with perhaps a 50-50 chance of rain. Any showers that do develop will probably be light, so these will be a nuisance rather than seriously disruptive. Expect highs in the mid-70s. Saturday night looks warm and muggy, with lows only in the mid-60s.

Sunday

This will be a partly sunny and warmer day, with highs in the upper-70s. I’m hopeful that we’ll see some partly sunny skies, with only lower-end rain chances. In short, this is probably the better day for outdoor activities.

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

Next week

Monday looks warm and partly sunny, with a decent chance of rain, before a weak front arrives Monday night-ish. Tuesday and Wednesday will probably be a bit cooler before a second, and stronger push of colder air arrives later on Wednesday or early Thursday to bring seasonal weather back into Houston for December, which is to say highs in the 60s and lows near 40 degrees. It may be a little warmer or even colder than this through next weekend. We’ll see. Alas, it’s still too early to have much confidence in a Christmas Day forecast. It’s just too early and the models are bouncing all around.

Some far inland areas see a light freeze, as coldest snap of this season sets in

In brief: Cold conditions will hold on for about 24 more hours before a more southerly flow starts to moderate Houston’s conditions. This weekend looks mild, with periods of light rain, but also some sunshine on Sunday if you want to plan outdoor activities with some confidence. Colder, winter-like weather probably returns about a week from now.

A cold start

Air temperatures in the metro area this morning are generally in the upper 30s to 40 degrees, and with the wind chill tacked on it feels several degrees colder. The bottom line is that it’s a good morning to bundle up. A few of the usual suspects, such as Cleveland, Conroe, and Navasota well north of the Houston region have dropped to 32 degrees, or just below this morning. We will experience one more cold night before the region returns to relatively balmy conditions for this time of year, with milder nights in the upper 50s to lower 60s.

It’s a cold morning across the entire Lone Star State. (Weather Bell)

Wednesday

Skies are clear this morning, and will remain so all day. Winds will come consistently from the northwest today, but we won’t see the gusty conditions the region experienced on Tuesday afternoon and during the overnight hours. A few areas saw gusts of 40 mph or even higher as a second front blew in yesterday. Despite the sunshine, our high temperatures today will struggle to push beyond 60 degrees. The air will be very dry today and tonight, and temperatures should be as cold as Tuesday night, if not a few degrees colder. More areas in Montgomery county may experience a light freeze.

Low temperature forecast for Thursday morning. (Weather Bell)

Thursday

Sometime after midnight, winds should turn southerly. By Thursday morning we’ll start to see dewpoints rising and this is the beginning of a more moderate pattern. Highs on Thursday should reach the mid-60s for most locations, with mostly sunny skies, and lows on Thursday night will probably only fall into the upper 50s.

Friday, Saturday, and Sunday

The weekend forecast is still a bit uncertain, but we’re starting to have a little more confidence. Daily high temperatures will generally range from the lower- to mid-70s, with mild nights generally in the lower 60s. Skies on Friday and Saturday should be mostly cloudy, but we could see some more sunshine on Sunday. As a front approaches the area, but likely stalls out, we probably will see some light to moderate rain on Friday night and at least the first half of Saturday. Accumulations will likely total a tenth of an inch, or two, so nuisance showers mostly. Rains should come to an end on Saturday afternoon. Sunday is probably your best bet for rain-free activities.

There is a fairly strong signal for colder weather during the second half of next week, and into the weekend. Our overall confidence in weather leading into Christmas Day is low, however. (Weather Bell)

Next week

Rain chances return on Monday ahead of another front. Although this is a weaker front, at this point it appears likely to make it down through Houston and to the coast. In addition to perhaps 0.5 to 1 inch of rain on Monday and Monday night, this should bring slightly cooler weather on Tuesday and Wednesday. After that time, we probably will see a stronger front to bring daytime temperatures into the 60s, and lows into the 40s. We shall see!

Site note

Due to scheduling issues, it is possible that Thursday morning’s post will be an hour or two late. Thanks for understanding. Do not be alarmed! If Space City Weather does not post, the Sun shall still rise.