In brief: Today’s post reviews the winter that just ended in Houston, and assesses how well the forecast did. We also look ahead to the (slight) possibility of storms on Tuesday before a pleasant spring-time week takes hold in Houston.
A review of winter 2024-2025
From a climate standpoint, winter runs from December 1 through the end of February. From a practical standpoint, winter in Houston roughly lasts from that period as well. This year, it almost certainly does, as winter is effectively over in Houston. I’m highly confident the region will not see another freeze this season, and reasonably confident that low temperatures are unlikely to dip into the 30s again for most of the metro area.
So now that winter is over, let’s take stock in what went down. The average temperature (the daily high and low, divided by two) over the last three months has been 56.8 degrees. This is above the historical mean of 55.2 degrees, and this winter ranks 31st of out of 133 years of records. If we look at the long term trend in the average temperature, it looks like this:
Now let’s dig into each of the three months a little bit more closely to see what we can see. As you may recall, December was quite warm. The month finished with an average temperature nearly 6 degrees above normal. The second half of the month did not feel winter-like at all. Do you remember our muggy Christmas weather?
January started out warm as well, but then conditions turned much cooler. During the second half of the month Houston experienced its first Arctic outbreak of the season, with temperatures plummeting all the way down to 20 degrees on one night. As a result of this colder weather, Houston finished January with an average temperature for the month 4.4 degrees below normal.
All of which brings us to February. The first third of February was exceptionally warm. We broke or tied four daily records for high temperatures in Houston, and some of our nights saw record warmth as well. But then the middle of the month was defined by the season’s second Arctic outbreak, with a few nights in the 20s. Despite this colder weather, February still ended with an average temperature a little more than 2 degrees above normal.
How did the forecast do?
We issued our winter outlook four months ago. We forecast a relatively mild winter, with temperatures above normal. However, we included this caveat:
However—and there’s always a but in meteorology, it seems—there is one caveat to this forecast. Because of the way this pattern sets up, it will block much of the colder Arctic and Canadian air from the lower United States for most of the winter. But that does not exclude the pattern breaking one or two times. If that happens, and it probably will at least once this winter, there will be a large pool of much colder air available to dip down into the southern United States, including Texas
Essentially, that’s what happened. Houston had a mild winter punctuated by a couple of strong bursts of very cold weather. And now, we’re on to spring.
Monday
After days and days of sunshine, we’re seeing mostly cloudy skies today. Despite a warmer overall flow, these clouds should help limit high temperatures to the mid- to upper-70s for most locations. We will also see a slight chance of light showers throughout the day, but mostly skies will just be gray. As on Sunday, we’ll see some gusty southerly winds, likely picking up to 25 mph or so this afternoon. Lows tonight will only dip into the upper 60s.
Tuesday
As a front approaches, we’ll see increasing rain chances after midnight, and throughout the morning hours on Tuesday. By around 8 to noon we may see a broken line of showers and thunderstorms develop and push through the area. Although we cannot entirely rule out the possibility of some severe weather, the dynamics favoring strong storms are more favorable to the northeast of the region, where there is a slight risk of storms. Most of Houston will likely pick up a few tenths of an inch of rain. Any lingering rains should end by around noon, with much drier air moving in behind. Temperatures will be in the 70s.
Beginning tomorrow, we’ll have daily forecasts for the Houston Livestock Show and Rodeo, but my main concern is northerly winds. They may gust up to about 30 mph on Tuesday afternoon and early evening before settling down. So, quite literally, hold on to your hat. Lows on Tuesday night will drop into the 50s.
Wednesday and Thursday
These will be a pair of sunny and mild days. We’re talking highs generally in the mid-60s. Expect lows on Wednesday night in the 40s, and on Thursday in the 50s. We should have zero weather concerns during the middle of the week.
Friday
We should see the return of some clouds along with a warmer flow on Friday, with highs in the mid- to upper-70s.
Saturday, Sunday, and beyond
The weather on Saturday will be determined by the timing of a cool front, which likely will push through during the daytime. This may produce a slight chance for some showers, but I expect mostly sunny skies with highs in the 70s. Sunday looks to be sunny, and cooler, with highs in the upper 60s maybe. Most of next week looks mild, with highs in the 70s and lows in the 50s, so the watch word is “mild.”
