Storms, some of which may be strong, are possible this afternoon as a front approaches

Good morning. If you live in the southern half of the Houston region, roughly along or south of Interstate 10, you already picked up about one-half inch of rain overnight. A storm system will bring a few additional waves of rain today, with the main belt of showers moving through this afternoon and early evening. The ensuing front will set the stage for several cooler and drier days. In short, after getting some much needed rainfall, fall-like weather will prevail for a while. Hard to complain about that!

Friday

This morning most (but not all) of the storm activity is offshore, and based on radar trends it looks as though these showers will remain so for now. However, the main driver of storm activity, a low pressure system in the atmosphere, is still moving toward the area so I don’t expect the largest chunk of showers and thunderstorms, some possibly severe, until late this morning and into the afternoon hours.

These storms will move from west to east across the area, with the heaviest rains likely exiting to the east by around sunset if not before. What should your expectations be? I still think most of the area will see 1 to 2 inches of rainfall, but there is still some uncertainty in that. Within stronger thunderstorms, there will be the potential for damaging winds, and a lesser chance of hail or possibly a tornado. High temperatures today are unlikely to rise above the mid-70s, with mostly cloudy skies.

If you’re traveling to the Astros game this evening, you should anticipate the possibility of some slowdowns due to weather on the way to the game, but afterward the weather should be fine except for the possibility of some lingering, light showers.

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

Saturday

While the showers should end on Saturday, it now looks like we’ll see cloud cover linger over the area for much of the day. This should help to limit high temperatures to about 70 degrees to go along with northwesterly winds gusting up to 20 mph. Lows on Saturday night should drop into the 50s, with partly cloudy skies.

Sunday

This will be a fine, fall weekend day with highs in the mid-70s and partly to mostly sunny skies. Winds will be light, generally from the northeast. Temperatures on Sunday night should be a degree or cooler than Saturday night.

Low temperatures on Monday will get Halloween off to a crisp start. (Weather Bell)

Monday

Halloween will definitely bring treats rather than tricks this year. Look for highs in the mid- to upper-70s with partly sunny skies. Expect mild conditions on Monday evening. While the potential for some rain will return during the early part of next week, at this point I think it holds off until Tuesday morning.

Next week

The rest of the week should see a warming trend, with highs getting to about 80 degrees by Friday or so. As mentioned, some light showers are possible on Tuesday and Wednesday. Some sort of front is likely to arrive by, or during the weekend, but the details of this are yet to be determined.

What to expect from storms on Friday, a mostly sunny weekend, and a splendid Halloween

Good morning. After a chilly start this morning, Houston will see increasing temperatures and humidity today, which will set up a day with widespread showers on Friday, and a chance of stronger storms. After a front moves through, expect clearing skies this weekend with pleasant highs in the low 70s.

Thursday

Temperatures have fallen to around 50 degrees this morning for much of the metro area. However, with sunny skies and light winds shifting from the northeast to southeast today, we’re likely to see highs climb into the upper 70s. A few areas may see 80 degrees. Low temperatures tonight will be quite a bit warmer, with most of the area falling only to the mid-60s. Humidity will also start to increase noticeably, as moisture surges in from the Gulf of Mexico.

The area in yellow is most at risk for severe weather on Friday. (NOAA)

Friday

The upper-level pattern will become much more favorable for storms on Friday, particularly for the southern half of the metro area. I expect the morning to start out mostly cloudy, with fairly scattered, probably mostly light showers. The best chance for stronger storms will come between about noon and sunset, moving from west to east. In terms of rainfall expectations, if you live north of Interstate 10 I would anticipate between 0.5 and 2 inches of rain, and if you’re south it might be on the order of 1 to 3 inches. Some areas will see less, and some more. In areas where stronger thunderstorms set up, there could be some brief street flooding.

Along with the threat of heavy rainfall, there is the potential for strong, gusty winds, and a lesser threat of hail or a few tornadoes. The potential for stronger storms is greatest to the south of Houston, particularly in the Matagorda Bay area. Otherwise, conditions will be muggy on Friday, with temperatures in the low 70s. The front will bring dry air in overnight, with rain chances lessening during the evening hours and dropping off by Saturday morning. If you’re headed to the Astros game, be prepared to dodge some showers on the way in. The roof, needless to say, will likely be closed.

Saturday

After a partly cloudy start on Saturday morning, I expect to see clearing skies. Look for highs around 70 degrees, with moderate northerly winds gusting to perhaps 20 or 25 mph during the afternoon. These winds should fade as evening comes on. Lows Saturday night will drop into the mid-50s in Houston, with cooler conditions inland.

Sunday

This should be a fine weekend day, with reasonably dry air, mostly sunny skies, and highs in the mid-70s. Lows on Sunday night drop into the low- to mid-50s. Enjoy!

Halloween will start of chilly in the Houston area. (Weather Bell)

Monday

Halloween should be another fine day, with moderately dry air and highs in the mid- to upper-70s. Look for mild trick-or-treating conditions, with temperatures in the upper 60s to 70 degrees. Far from frightful!

Rest of next week

Houston will see a gradual warming trend, with highs getting back to around 80 degrees by Wednesday or Thursday. But it’s not going to be oppressively hot or humid. Lows will rebound into the mid-60s. The next front, and the potential for some rain, may come next weekend. But that’s too far away to forecast with any confidence.

There is a pretty good chance of rain this Friday—no, really

In recent weeks the Houston area has had some decent chances for much needed rainfall after a very dry late summer and early fall. How dry? Houston’s Hobby Airport, for example, is now running a rainfall deficit this year of more than 25 inches. Those hoped-for rain storms have been hit or miss this month, however, with much of the area only picking up a smattering of rainfall.

Stop me if you’ve heard this before, but looking ahead to Friday the Houston region has another good chance of rainfall. As I’ll explain below I’m cautiously optimistic this one will deliver more widely. But hey, if you’re skeptical, I get it. Recent rain storms have definitely underperformed.

Temperature (top) and rainfall data for 2022 at Houston’s Hobby Airport. Note the rainfall deficit, shown in brownish-yellow. (National Weather Service)

Wednesday

Today will bring no rainfall, of course, with high pressure overhead. Rather we can expect extraordinary fall weather, with sunny skies, dry air, and highs in the mid-70s. Winds will be light, out of the northeast. As these winds shift to come from the east overnight, we can expect overnight temperatures to be a little warmer on Thursday morning, likely in the low-50s in Houston.

Thursday

As the onshore flow deepens on Thursday we’ll start to see humidity return, as well as some clouds later in the day and evening. Highs will be near 80 degrees, and with the warmer flow overnight temperatures are unlikely to fall below the mid-60s. This moistening of the atmosphere will set up healthy rain chances on Friday, ahead of a cold front.

Friday

The key ingredients will be in place for widespread showers, and possibly some heavier thunderstorms, on Friday: a lot of moisture in the atmosphere, a low-pressure system associated with an advancing front, and daytime heating. The extent to which all these line up will determine the amount of rainfall we see, but I think the majority of the area can probably expect about 1 inch, with the potential for more in areas where strong thunderstorms develop. Some street flooding is possible.

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

This is not a guarantee of rainfall, and with the underperformance of precipitation in recent months I’m hesitant to go further. But suffice it to say this is our best chance for a good soaking in quite a while. Skies will otherwise be cloudy, with highs in the mid-70s. If you’re lucky enough to be going to Game 1 of the World Series, which starts at 7:03 pm CT on Friday evening, you can expect a chance of lingering showers, but the heavier rains will probably be gone. I’ll try to pin down the timing of storms in tomorrow’s post.

Saturday and Sunday

The weekend will be cooler in the wake of the front. While the chance of showers should end by Saturday morning, some clouds could linger into the daytime. Look for highs near 70 degrees, with lows Saturday night in the mid-50s in Houston, with cooler conditions further inland. Sunday will be mostly sunny and warmer, with highs in the low- to mid-70s.

Next week

Halloween’s weather on Monday will be far from frightful, with sunny skies and highs in the upper 70s. Expect very light winds and mild temperatures on Monday evening, perhaps near 70 degrees or just below.

The rest of next week looks warmer, with highs near or just above 80 degrees, and lows moving into the upper 60s. The next front may move in before next weekend, or not.

Hello, Fall

Good morning. Temperatures have fallen to about 60 degrees across much of the region this morning in the wake of the overnight frontal passage. Pleasant, fall-like weather will be the order of the day for the next week or so. And if you did not get enough rain with this front—and let’s be honest, you probably did not—there’s a second chance for a decent splash with another front arriving before the weekend.

Tuesday

Today will be rather breezy as northwesterly winds bring drier air into the region. Expect steady winds at about 15 mph, with gusts up to 30 mph. Highs will reach about 70 degrees beneath mostly sunny skies. Winds should start to back off some this evening, and as the Sun sets temperatures will follow, with lows dropping to about 50 degrees in Houston, with colder temperatures further inland, and a bit warmer conditions right along the coast.

Lows on Wednesday morning will be quite chilly away from the coast. (Weather Bell)

Wednesday

This will be a gorgeous fall day, with light winds, sunny skies, and highs in the mid-70s. Lows on Wednesday night will be a few degrees warmer as winds shift to come from the east.

Thursday and Friday

As the onshore flow gets going, highs on Thursday should get into the upper 70s to possibly 80 degrees, with mostly sunny skies. As a reinforcing front approaches Thursday evening we’ll start to see increasing rain chances Thursday night and running into Friday. The details about the front’s arrival are still a bit murky, but it’s probably safe to say that much of Friday will be cloudy, with a chance of rain persisting into the afternoon hours. I’d guess accumulations will be around 0.5 inch for most areas, but I don’t feel overly confident about that right now. Highs on Friday will probably be in the mid-70s, with lows dropping into the 50s by Saturday morning.

Saturday and Sunday

The weekend looks pretty grand, with highs of around 70 degrees beneath mostly sunny skies. Lows will drop into the mid-50s or so for much of the area.

Current forecast for temperatures at sunset on Monday, Halloween. (Weather Bell)

Next week

By Monday, Halloween, we should see a warming trend as highs climb into the mid-70s. For trick-or-treating, conditions should be rather mild, with temperatures in the upper 60s to 70 degrees, and just a touch of humidity. Rain chances look to be near zero.

Most of the rest of next week looks to be warmish, with highs in the low 80s and partly to mostly sunny skies.