Scattered storms today and Thursday in Houston, spectacular weekend ahead

It’s a very warm morning for early November across the Houston area, with low temperatures ranging from 68 degrees north of Houston all the way up to 76 degrees down in Galveston, which likely will tie a record for a warm low temperature. We’ll continue to see these kinds of conditions, along with scattered storms, for a couple of more days before this warmth finally breaks.

Temperatures as of 6:20am CT. (National Weather Service)
Temperatures as of 6:20am CT. (National Weather Service)

Today and Thursday

The pattern remains more or less the same. With moisture streaming in off the Gulf of Mexico, expect to see more cloudy days, with scattered rain showers. Some areas of Houston, especially west of the city, saw brief, heavy storms on Tuesday, and that pattern should continue for the next couple of days. Meanwhile, high temperatures will reach about 80 degrees where there are heavy clouds, and could climb all the way into the mid-80s for areas that see a bit of sunshine. Overnight lows will remain anomalously warm.

Friday

A cool front will push into Houston late on Thursday or early Friday, but the cooler and drier air will lag somewhat. As I noted yesterday, we’re going to have to wait until Friday evening to really see dewpoints begin to fall and the air to dry out. So expect one more day with highs of around 80 degrees. Rain chances will be near zero.

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Just three more days before the end of Houston’s very warm streak

Houston’s high temperature peaked at 85 degrees on Halloween, but our run of very warm (for late fall) weather will soon come to an end—by this weekend. And after this week I think we can look for most days to only reach the 70s as we get deeper into November.

Today through Thursday

But the warm, muggy air is not ready to go yet. With air now flowing off the Gulf of Mexico and into the Houston area today, expect the next few days to see mostly cloudy skies, with highs in the low- to mid-80s, and some scattered showers. Rain chances will be greatest today the southwest of Houston, closer to Matagorda Bay, where moisture levels should be highest. More widespread rain is possible on Thursday across the Houston area as some instability moves in along with an approaching front. But I don’t think we’re going to see significant accumulations of more than a tenth of an inch of rain, or two. Nights won’t see much cool down through Thursday, with temperatures only falling to around 70 degrees for most areas.

Friday

After a cool front limps into Houston later on Thursday, the region should being seeing some drier air on Friday, which will set us up for a pretty nice weekend. Under mostly sunny skies we should see a high of around 80 degrees, with a low of 60.

Although a cool front should arrive late Thursday, much drier air is unlikely to move in before Friday afternoon. (Weather Bell)
Although a cool front should arrive late Thursday, much drier air (noted by dewpoints) is unlikely to move in before Friday afternoon. (Weather Bell)

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After near record warmth in October, a pattern change lies ahead

Happy Halloween! Before jumping into the forecast let’s take a look at what a trick of a month this has been for Houston and much of the southern United States. The following graphic shows the ranking of the average temperature this October compared to more than 100 years of temperature records for this month. Hint: It was warm.

(Eric Blake via Twitter)
(Eric Blake via Twitter)

The Houston area has had some sites with the second warmest temperatures, but Dallas, Lubbock, Brownsville, and many other sites are on pace for their warmest Octobers on record. It looks like we’ll have one more warm-ish week before the pattern really does change for good into more fall-like weather.

Today

Houston is under a dense fog advisory until about 10 am CT. With high pressure overhead, today will be another warm, mostly sunny day with high temperatures in the mid- to upper-80s, and overnight lows falling only to around 70 degrees. It won’t be chilly this evening during trick-or-treating, but it won’t be particularly unpleasant, either. Rain chances will be near zero.

Tuesday through Thursday

As high pressure moves off moisture levels will increase over Houston. This will accomplish several things—we’ll see more clouds, which should limit high temperatures to the low 80s, and after an extremely dry October we might see some rain showers to start off November.

The rain accumulation forecast for this week shows the best chances to the southwest of Houston. (Weather Bell)
The rain accumulation forecast for this week shows the best chances southwest of Houston. (Weather Bell)

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Houston’s official trick-or-treat forecast for Halloween

We’re fast coming up on Halloween and I’m happy to report that we’re not going to face the kind of uncertainty we did in 2015, when Houston was in the midst of widespread rain storms that threatened to ruin Halloween. (We got soaked in my neighborhood in Clear Lake).

Rain chances aren’t zero this year, because the onshore flow will resume in force on Monday, which should further increase humidity levels for the region. This could produce some isolated showers for coastal areas, but I don’t expect any widespread issues. Right now it looks like rain chances will improve on Tuesday and Wednesday.

A Halloween scene at the Zoo Boo. (Photo by Jason Cross/Flickr)
A Halloween scene at the Zoo Boo. (Photo by Jason Cross/Flickr)

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