Month: May 2025

In brief: Houston’s weather will be mostly hot and sunny through Sunday. However, by Memorial Day our pattern should start to turn a little bit more unsettled, leading to cooler days with better rain chances for most of next week.

High School graduation weather

Many, but certainly not all, area high schools will hold their graduation ceremonies this weekend, when we have few weather concerns aside from the warm temperatures. Among the graduations will be an outdoor event for my youngest daughter, Lily. Both of our children have been enrolled in Clear Creek Independent School District for the better part of two decades, and it is bittersweet to contemplate the end of their school days. By and large their experience has been wonderful, with several great teachers along the way to provide wisdom, and love, and inspiration.

Amanda and I are grateful for our daughters’ public school education, and all the teachers and janitors and bus drivers and clerks and administrators who work so hard to help bring our children up. You strengthen our community immeasurably. And to all the graduates I would say that the world is kind of a mess, and we could use your help to build a brighter future. Best wishes, and the greatest of luck to you all.

Thursday

In contrast to Wednesday morning, it is muggy outside this morning, with temperatures having fallen only into the mid- to upper-70s across the region. Skies will gradually turn sunny today, and this will allow high temperatures to reach up into the mid-90s. Winds will generally be light, from the east. There is a very slight chance of some showers near the coast this afternoon, but the overall odds are probably on the order of 10 percent. Expect another muggy night.

Friday

This will be another hot and mostly sunny day, with temperatures in the mid-90s again. Winds will again be fairly light, generally from the southeast.

Saturday

The first part of Memorial Day Weekend will bring more of the same, albeit with some subtle changes. One is that highs may be a degree or two cooler. The other is that southeasterly winds should be a little more pronounced, perhaps gusting up to 20 mph or higher. Nights remain warm and muggy.

Sunday

This will be another mostly sunny day, with highs likely in the lower 90s. By Sunday afternoon or evening there will be a slight chance of showers or thunderstorms as the atmosphere turns a bit more disturbed, but I would not put the odds of seeing precipitation at higher than 10 percent. It will be another gusty day, with winds from the southeast possibly reaching 25 mph or so.

Memorial Day and beyond

A more unsettled pattern looms for next week, likely beginning on Memorial Day. Overall we will see increased cloud cover, higher rain chances, and cooler temperatures for much if not all of next week. I’m hopeful that most of the area will pick up between 0.5 and 2 inches of rainfall, which most of the region needs after a dry May. Daytime highs will likely vary between the mid-80s and lower-90s depending on the extent and timing of rainfall. Nighttime temperatures will be a bit lower as well, dropping into the lower 70s later in the week. If we’re lucky, this late spring-time weather will get our soils get ready for the depths of summer, which lie just around the corner.

In brief: We’ll see a short reprieve in humidity today, but then we are back to hot, and mostly sunny weather through Saturday. The second half of Memorial Day weekend could see the onset of some scattered showers, and by next week a pattern change should bring cooler temperatures and more widespread precipitation.

Front status

A weak front moved into Houston overnight. It produced some stray showers and thunderstorms near downtown Houston and the Liberty area, but for the most part it was a dry passage. The front has now stalled near the coast and should allow for showers (mostly offshore) this morning before lifting back north as a warm front. Therefore, if you’re enjoying the slightly lower humidity levels this morning, don’t get too attached. Humidity levels will begin to climb this afternoon, and we’ll be back to sticky status this evening.

Wednesday

Skies will be mostly sunny for most of Houston today, with high temperatures in the low 90s. Winds will start out from the northeast this morning, but return to come from the southeast by this afternoon or evening—hence the rapidly recovering humidity levels discussed above. There likely will be some showers offshore, and a few of these may impact coastal areas today, but most likely they mostly remain over the Gulf. Lows temperatures tonight will drop into the mid-70s.

Thursday and Friday

These will be a pair of mostly sunny and humid days, with high temperatures in the low- to mid-90s for most locations and nights in the 70s. Rain chances are near zero. Winds from the southeast, generally, will be light.

Memorial Day weekend

It’s hard to believe we are already at the Memorial Day weekend stage of things, but here we are. Saturday should, more or less, see a continuation of the hot, humid, and mostly sunny weather of Thursday and Friday. Sunday may see a few more clouds, but will still be rather hot and humid. There may be a 20 percent chance of rain. By Memorial Day, however, we are likely to see the impacts of an advancing front. Highs may be around 90 degrees, with partly to mostly cloudy skies, and perhaps a 50 percent chance of light to moderate showers.

Next week

The details remain sketchy, but that front is likely to move into Houston and bring a period of moderately cooler and wetter weather. Most of next week should see highs in the 80s and lows in the 70s, with healthy rain chances. It’s difficult to pick a day with the greatest likelihood of rain, but we do look to be headed to a pattern in which showers are more abundant. We could use the break after a mostly hot, and mostly sunny May so far.

In brief: Steel thyself, for today is likely to be the hottest day of 2025 so far. But the upside of this is that the region will see about 24 hours of modestly drier air starting late this afternoon or evening. Looking ahead to Memorial Day weekend, a chance of rain returns Sunday and especially Monday.

Tuesday

The city of Houston recorded its hottest day of the year last Wednesday, when the mercury hit 96 degrees at Bush Intercontinental Airport. Today, in advance of a weak front, we may go a tick or two higher. This is because of a pronounced warm, southwesterly flow in the atmosphere, and front that will be compressing air as it moves toward the region. Much of the city away from the coast will push into the mid- to upper-90s, and with sticky dewpoints in the 70s it’s going to feel like August outside. This seems really, really unfair for May, doesn’t it?

Well yes, it does. Fortunately, a weak front is going to slowly slide into the area this afternoon and evening. It may bring a few brief, scattered showers and thunderstorms with it. By around sunset this evening, areas inland of Highway 59/Interstate 69 should see dewpoints in the 50s. Air temperatures will still be warmish, for sure, but at least humidity will drop some. It probably won’t be until after midnight, or a few hours after, before these somewhat lower dewpoints drop all the way to the coast. With the drier air, low temperatures tonight probably will fall into the upper 60s for areas inland of Interstate 10, while being a bit warmer closer to the coast.

Wednesday

Don’t blink or you’ll miss the drier air. South of I-10 dewpoints will start climbing by Wednesday afternoon, and the humidity will spread inland everywhere by Wednesday evening. With the daytime sunshine, I expect highs to still reach the mid-90s on Wednesday with light northeast winds turning southeast. Lows drop to the low- to mid- 70s overnight.

Thursday

This should be a hot and partly sunny day, with temperatures in the mid-90s. I expect to see somewhat of a disturbed atmosphere aloft, and this normally might contribute to a chance of showers. However, this upper air will have to overcome a capping inversion, and for this reason I am going to limit rain chances to about 20 percent, and that is probably only for areas south of Interstate 10. Lows on Thursday night will drop into the 70s.

Friday

This should be a sunny, hot, and humid day with temperatures in the mid-90s.

Memorial Day weekend

The first third of the holiday weekend probably will see a continuation of Friday’s weather, but the forecast turns a bit more interesting later on. The combination of a weakening ridge of high pressure and a somewhat disturbed atmosphere may bring a slight chance of showers and thunderstorms into the region on Sunday, with better chances still on Memorial Day, perhaps 50 percent or higher Daytime highs should be cooler, perhaps in the lower 90s.

Next week

A wetter and somewhat cooler pattern should settle in next week. Probably we will see more May-like temperatures in the upper 80s, with a daily chance of showers and thunderstorms. We’ll see. Almost anything will be better than today’s August in May.

In brief: Houston will see temperatures spike on Tuesday ahead of a weak front that may (very) briefly provide some drier air. The rest of the week looks warm and humid, with a chance of rain returning by the weekend.

Above average temperatures

As we have been discussing, Houston has been experiencing a warm spell in the middle of May. During the last five days, the average temperature (the daily high and low, divided by two) has been 9 or 10 degrees above normal. This weather has largely been driven by a high pressure system that brought sinking air and mostly sunny skies. This high pressure system has now shifted away, but for reasons discussed below we are still going to be quite warm this week, with one especially hot day (Tuesday) in the forecast.

Monday

Highs today should peak in the low 90s, and skies that are at least partly cloudy should help keep a lid on temperatures. In addition to high humidity, we will see fairly strong southerly winds, gusting up to 30 mph this afternoon. Lows tonight will be muggy, perhaps only briefly dropping below 80 degrees in the city of Houston. Coastal locations, of course, will see moderately cooler days and warmer nights.

Tuesday

A cool front will approach the area on Tuesday, and this will result in compressional heating as winds turn to come from the southwest. (Effectively, the front is compressing and heating air ahead of it as it advances). How hot we get on Tuesday will depend on cloud cover during the afternoon, but much of the region has a solid chance to get into the upper 90s. One other thing to watch for is the possibility of isolated showers and thunderstorms with the front. I think a capping inversion will be too much for the front to overcome, but it’s something we cannot rule out.

Drier air from this front should eventually move into the area over night, possibly reaching all the way down to the coast. Most of the area could see lows in the lower 70s by Wednesday morning.

Wednesday

The front, to the extent it impacts our area, will be briefly lived. But it should have some impact on Wednesday’s weather, bringing mostly sunny skies, highs in the lower 90s, and somewhat lower humidity. But it will be washed away quickly, with humidity climbing by Wednesday night. Expect low temperatures in the mid-70s.

Thursday and Friday

These look to be a pair of mostly sunny, humid days with high temperatures in the low 90s for most, with overnight lows in the mid-70s. We should see southerly winds, but gusts probably won’t get above 15 or 20 mph.

Saturday and Sunday

The weekend should see ongoing, mostly sunny weather with high temperatures in the low 90s. However, with only modest high pressure in place I think there is perhaps a 10 percent chance of some showers on Saturday afternoon, and 30 percent on Sunday. So that will be something to watch for.

Next week

The overall pattern for next week looks slightly cooler (highs around 90 degrees, maybe) and wetter. We sure could use some rain, and the atmospheric setup would support it. But I certainly am not going to confidently forecast rain 7 to 10 days from now after an extended dry spell. However, we can at least have some hope for change.