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.
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.
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?
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.