Two wet days will precede a drier pattern for Houston

Storms have pulsed up overnight north of the Houston area, particularly in the Lake Livingston area, close to where a stationary front is located over Texas. This front will eventually slog its way down to Houston and off the coast, but in the meantime our region will see intermittent rainfall, some of which could be heavy. We do not have significant flooding concerns. Lovely late spring weather will move in later on Wednesday, after the front moves offshore.

Location of stationary front as of Tuesday morning. (National Weather Service)

Tuesday

It’s very warm this morning, with lows only getting down to about 80 degrees for some locations in Houston. As the front slowly moves south, I think we’ll see decent rain chances across the area north of Interstate 10, but showers will likely remain mostly scattered until tonight. This will leave us with a mostly cloudy day, therefore, and highs in the upper 80s. Winds out of the southeast may gust up to 25 mph.

Tuesday night and Wednesday

This is a difficult rainfall forecast, because I think some areas will see no rainfall over the next two days, while some isolated parts of the Houston metro area pick up 5 inches, or more. Most areas will probably see about 1 inch. As a general rule, I’d expect the potential for heavy rainfall to be greatest north of Interstate 10 through about midnight, and shift more toward the coast on Wednesday morning.

NOAA rainfall accumulation forecast for now through Wednesday night. (Weather Bell)

The potential for heavy rain should end during the afternoon hours on Wednesday, and any lingering showers should end by late afternoon. Daytime highs likely will climb only into the 70s, and lows will drop into the upper 50s to low 60s Wednesday night. While not exactly cool, this (and Thursday night) may nonetheless be the coolest weather Houston sees until September, at least.

Thursday and Friday

Houston will see splendid weather to end the work week, with highs in the upper 70s to 80 degrees, drier air, and partly to mostly sunny skies. Lows will drop to around 60 degrees on Thursday night, and into the mid-60s on Friday night.

Friday morning lows for Houston look rather pleasant. (Weather Bell)

Saturday, Sunday, and beyond

Saturday should be a pretty nice day, with partly sunny skies and highs in the low 80s. While I can’t entirely rule out some spotty showers, right now I think we’ll stay dry. A disturbance will bring a healthy chance of showers to the region on Sunday and Sunday night, but I’m not too confident about the details. Highs will return to the mid-80s, and I think we’ll see a mix of sunshine and clouds when it’s not raining. Much of next week looks fairly wet, with healthy rain chances most days. Again, details to come on that.

Storms possible as spring holds on a little bit longer for Houston

May has started out fairly warm for Houston. The city recorded its first 90-degree day May 3, and although the region recorded a few cooler nights, most days have seen highs in the upper 80s. This is the time of year when cool fronts start to become really scarce, and the heat and humidity of summer in Houston begin to assert themselves. However, I’m happy to report that the region will experience at least one more decent front this spring.

Monday

Skies are mostly cloudy this morning across much of the region as a cold front remains stalled out north of the Houston metro area. The front won’t move much today, so most of Houston will continue to see partly to mostly cloudy skies and warm temperatures in the upper 80s to low 90s. A few scattered showers and thunderstorms will be possible across the region, with slightly higher chances north of Interstate 10. But for the most part, a capping inversion should limit activity. Overnight temperatures will drop into the mid-70s for most.

Monday should be the hottest day of the week. (Weather Bell)

Tuesday

The front may slide a little closer to the Houston area on Tuesday, and this will trigger somewhat better rain chances. Most parts of Houston probably will see at least a sprinkle on Tuesday, with some areas getting perhaps a couple of tenths of an inch of rain. There is a slight chance for some heavier rainfall for areas north of Houston, such as College Station or Huntsville. Skies will otherwise be cloudy, with highs in the mid-80s. Overnight lows will depend upon the progression of the front, which will begin pushing toward the coast on Tuesday night.

Wednesday

The region will see widespread showers and some thunderstorms on Tuesday night and Wednesday as the front slogs its way through the region. I don’t feel overly confident in the rain accumulation forecast, but it seems likely that much of Houston and surrounding areas will see 1 to 2 inches of rainfall, with showers likely ending on Wednesday afternoon. Highs on Wednesday will be around 80 degrees, and lows Wednesday night should drop into the lower 60s.

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

Thursday and Friday

The end of the week looks glorious, with drier air likely filtering in behind the front. Look for high temperatures in the upper 70s to around 80 degrees, sunny skies, and overnight lows in the 60s. This is very fine weather for mid-May.

Saturday and Sunday

The weekend forecast is not yet locked in. I think we’ll continue to see partly to mostly sunny skies in the wake of the front, with highs in the low 80s on Saturday, and mid-80s on Sunday. Dewpoints will rise as the onshore flow resumes. We can’t entirely rule out rain showers, but overall chances look fairly low at this point.

Humidity returns to Houston this weekend ahead of unsettled weather next week

We’ve had some stellar May weather to close out this week, and today will be no exception. But look for changes this weekend, leading to some unsettled weather next week.

Drought update

So, some good news! The rains of last weekend did a number on drought across Texas. About 20 percent of the state exited drought completely, with about 45 percent remaining there today.

Drought is still prevalent in Texas, but the rains of last weekend took a big bite out of it, especially in eastern Texas. (US Drought Monitor)

Locally, that change was even more stark. We went from about 45 percent of the region in drought last week to less than 10 percent now in drought.

Use the slider to see last week’s drought map (slide right) versus this week’s map (slight left) in the Houston National Weather Service coverage area. (US Drought Monitor)

Overall, last weekend’s rains did not completely end drought concerns, and there are still some localized pockets that didn’t get quite a lot of rain last weekend. But it did put a dent in the drought. The hope is that next week’s unsettled weather will do some more, although as of today it appears that the bulk of next week’s rain may fall in areas that are not in serious need of rain. More on that below.

Today

Look for another winner today with sunshine and some passing high clouds. High temperatures will top off in the mid-80s, with perhaps a couple upper-80s peppered in there too. Humidity remains fairly low, though it will subtly increase later in the day.

Saturday

Tomorrow should still be a fairly decent day. Any outdoor plans should be fine, though I wouldn’t exactly be shocked to see an isolated shower west of the city. We should have some fog in a few spots early, clearing to sun and clouds with morning lows in the 60s again warming into the mid-80s. Humidity will be noticeably higher tomorrow. A southerly breeze will also pick up a bit, so if you’re out on the Gulf or Galveston Bay, be ready for some 20-25 mph wind gusts building as the day goes on.

Mother’s Day

As noted in yesterday’s post, the Sunday forecast is a trickier one. However, while we can’t entirely rule out some more widespread, heavier showers, those seem more likely to stay comfortably north of the Houston area through late afternoon or evening, between Huntsville and Dallas. If you will be traveling to or from Dallas on Sunday, do keep that in mind, particularly in the afternoon or toward evening. But for the majority of our area: Clouds, some sun and just a slight shower chance. There may be some light rain, drizzle, or mist in the morning hours. It will end up warm to hot and humid, with morning lows in the 70s and highs in the mid to upper-80s, along with a steady southeast breeze. I think storm chances may increase a little bit on Sunday evening, but details are still a bit uncertain.

Monday through Wednesday

As we discussed yesterday as well, next week’s forecast is dependent on the orientation of a stalled out cold front near or north of us, as well as the timing of any disturbances rippling by overhead. We know that there will probably be at least scattered thunderstorms next week. We know it may not rain each day and certainly not everywhere each day, but we know that the chances are probably better than 50 percent at times.

The rainfall forecast from NWS next week looks fairly healthy, but there will likely be some areas that get less than advertised here and some that perhaps see a bit more, especially north of Houston. (Weather Bell)

While we could see some locally heavy rain in this type of weather pattern, the most likely areas to see that will be north of I-10, because of course. On average, I would expect about a quarter to half-inch of rain south of I-10 Monday through Wednesday, a half-inch to inch or so in the city, and 1 to 3 inches north of the city. But amounts may vary considerably, with some places merely seeing a tenth of an inch or so and others perhaps seeing as much as 4 or 5 inches. Serious flooding is not expected to be a concern.

Late next week

That stalled out front is likely to push offshore late next week, ending rain chances and ushering in offshore winds to allow humidity to drop again for a couple days. Expect lows in the 60s and highs in the 80s, but those mornings will hopefully feel nice. “Hopefully” is carrying a lot of weight in that sentence, but most reliable model data does support lower humidity and slightly cooler temperatures late next week.

Unless it appears that the weather will change significantly this weekend, look for Eric to be back in the saddle for our next post on Monday morning!

A couple more nice days before a tricky Mother’s Day forecast

We managed the mid-80s yesterday with dew points sitting in the 50s all day, which is pretty comfortable. We get another day or two of that kind of weather before things go back to pre-summer and the details of the forecast get more complicated.

Today and Friday

Look for lots of sunshine and just a few clouds both today and tomorrow. A little low cloud cover or patchy fog is possible tomorrow morning southwest of Houston. We should manage mid-80s both afternoons and upper-50s to mid-60s tomorrow morning, similar to today. Galveston should bottom out near 70° tonight, however. No weather woes, but air quality may be poor. You may have seen the Ozone or Air Quality alerts on your phone or other sites you use for weather info. Having a lot of sunshine, warm temperatures, and light winds tends to help produce ground-level ozone in areas with pollution from heavy traffic and industry. Days like this in spring, summer, and early fall are not uncommon here unfortunately. Take it easy if you have any respiratory sensitivities.

Saturday

Humidity will still be low enough on Saturday morning to allow temperatures to drop perhaps into the low to mid-60s away from the bays and coast. But as Saturday progresses, the humidity will inch upward. Look for highs in the 80s, some sunshine and added clouds, and a very slight shower chance. Saturday night will see temperatures struggle to get below the low-70s, so “pre-summer” will be in full effect.

Mother’s Day

The forecast gets conveniently complicated beginning on Sunday unfortunately. The setup for Sunday and much of next week is going to be contingent on the exact placement of a cold front that is destined to stall out somewhere between the Gulf Coast and Dallas. This will likely lead to at least a couple rounds of thunderstorms, with the first occurring Sunday afternoon. Models still have some disagreements on coverage, intensity, and the exact location of Sunday’s storm chances, however.

The European and GFS models both show higher rain risks north of Houston on Sunday, but the Euro has a much more robust area of thunderstorm coverage than the GFS at this time. Details TBD. (Weather Bell)

The odds of more widespread showers and storms on Mother’s Day are still highest right now north of Houston. But there is little room for error in that current forecast, meaning any shift south will open the door to greater coverage of afternoon storms in and around Houston. The timing may allow for Mother’s Day brunch plans to go off successfully (though there will likely be at least a few showers around late Sunday morning into early afternoon). But those of you with Mother’s Day dinner plans, particularly outside, will want to keep tabs on the forecast.

Look for highs well into the 80s, though any thunderstorms will allow temperatures to briefly cool off.

Next week

As noted above, next week’s forecast will be highly contingent on exactly where that cold front orients and the timing of any disturbances rippling along the front. Expect at least a chance of storms Monday through Wednesday, but trying to hone in on exact details on timing and intensity this far in advance is very difficult. We will know more as we get closer. Look for highs in the 80s to near 90 degrees at times, lows in the 70s.

Another front?

By later next week, the European ensemble, which runs slightly tweaked versions of the European model 51 different times is showing about a 60 to 70 percent chance that the front responsible for next week’s unsettled start will slip through the region and offshore.

There is a better than average chance that another brief period of comfortable air may arrive for a couple mornings later next week. (Weather Bell)

You can really only see this reflected in overnight lows, which noticeably drop back on the ensemble (boxed in above) beginning Thursday or Friday morning. It’s worth noting that the GFS model is somewhat less enthusiastic about this possibility. So, there is still some uncertainty here, but if we do see the front clear us next week, look for highs to drop back a few degrees into the low to mid-80s and morning lows to go from the 70s early in the week to mid to upper-60s perhaps, with some risk for slightly cooler. We will see!