Today may be the last 80-degree day of 2019. (No promises!)

Good morning. It has only been 2.5 weeks since Houston experienced its last 90-degree day of 2019. But since then we’ve transitioned rapidly from late-summer weather into fall and now we’re teetering on winter-like weather (be sure and check the forecast for next week below). Anyway, I write that to say that I think today may be one of the region’s last 80-degree days for awhile and perhaps even the last such day of this year. Although that is certainly no guarantee.

Wednesday

We’ll see some high clouds today, but for the most part we can probably expect mostly sunny skies throughout today. Given the sunshine, and flow of warm air, we can probably expect high temperatures to nudge up to around 80 degrees today, or a bit warmer for some inland areas. Lows tonight will generally fall into the 60s—how far will depend upon your distance from the coast.

NOAA rainfall accumulation forecast for Thursday and Friday. (Pivotal Weather)

Thursday

Clouds will build Wednesday night, and Thursday should be a mostly cloudy affair. Highs should generally get into the mid- to upper-70s ahead of the cold front. There is still some question when the front will push into Houston, but I’d guess it will reach northern and western parts of the metro area by late afternoon, and push off the coast by or before midnight—but don’t hold me to that timing. Another question is rainfall. If there’s any agreement in the models it’s that the better chances lie south of Interstate 10, and closer to the coast. I still think most of the region will see between 0.5 and 1.0 inch of rain on Thursday and Thursday night, with the isolated potential for 2.0 inches or more for some areas near the Gulf.

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Houston this week: Warm, cool, then cold

Good morning. With the warmer overnight conditions, some fog has developed over the area, particularly across the western metro area in places such as Tomball and Katy. Aside from that, our weather will be pretty mellow until Thursday, after which a succession of cold fronts bring winter-like conditions to the region by early next week.

Tuesday

Today will be warm as Houston falls under the influence of Gulf of Mexico air, with highs reaching up to about 80 degrees despite mostly cloudy skies. Forecast models are hinting at some very slight, very scattered rain showers today, but for the most part we’ll just see clouds. Low temperatures on Tuesday night should fall into the low- to mid-60s as winds become more easterly.

Highs Tuesday will be fairly warm, especially to the southwest of Houston. (Pivotal Weather)

Wednesday

We’ll see partly sunny skies on Wednesday, with highs in the mid- to upper-70s. Rain chances are near zero.

Thursday

We’re still not entirely sure what Thursday is going to look like, but most of the day ahead of a cold front should be fairly warm, especially for central and southern parts of the metro area. High temperatures will likely push up to around 80 degrees despite mostly cloudy skies. Moderate rainfall ahead of, along with, and just after the front will be likely on Thursday during the afternoon, evening in most of Houston, and perhaps continuing after midnight for areas along the coast. Accumulations of 0.5 to 1.0 inch seem likely for most, with a few isolated areas perhaps seeing as much as 2 inches of rain. Temperatures and dewpoints will fall after the frontal passage, which should occur during the late evening for most of the city.

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A mostly quiet fall-like week for Houston lies ahead

Well, I hope you enjoyed that weekend. Sunday, especially, offered a mix of cool, dry air, and sunshine that were just about perfect for fall. It was hard not to spend most of the day outside. The good news is that next weekend should have a similar mix of pleasant fall air and sunshine.

Monday

Clouds have returned this morning to most of the metro area, indicative of the region’s changing air flow. As a result we’ll see higher temperatures—mid-70s, mostly—and higher humidity throughout the day. Skies should remain partly to mostly cloudy. Low temperatures on Monday night will not cool down much, only falling into the mid-60s for most of the area.

Low temperatures on Tuesday morning could support the development of fog. (Pivotal Weather)

Tuesday

After several colder nights, the combination of these warmer nighttime temperatures, moisture returning from the Gulf of Mexico, and light winds will probably lead to the development of some widespread fog on Tuesday morning. A weak front will move into Houston, and perhaps stall near the coast, on Tuesday. This is unlikely to have much of an effect, but may generate a low chance of showers, perhaps 10 or 20 percent around I-10 or points south. For the most part this should be a partly to mostly cloudy day, with highs in the 70s.

Wednesday

This should be a partly to mostly sunny day, with highs in the 70s.

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Houston will come close to a freeze on Friday morning

The rains are over for now, but the cold weather is just beginning. Cold air pushing into the Houston region on Thursday will be amplified by gusty winds, especially along the coast. Already this morning, Galveston has recorded a gust of 46mph, while inland areas are generally seeing gusts in the 20s. In terms of temperatures, much of Houston could see record lows on Thursday night.

Thursday

As a deep layer of cold, dry air moves into Houston this morning we are already seeing clearing skies across the region. But despite ample sunshine, high temperatures Thursday will only get into the low- to mid-50s. As a result, this will probably be the coldest Halloween day since 1925. Winds should begin to die down late this afternoon or early evening, about the time when the sun goes down. Temperatures during trick-or-treating, will likely fall into the upper 40s, on their way down to the mid-30s overnight for much of the area. Will it freeze in Houston? Probably not as our relatively wet grounds should help moderate our temperatures just a bit. But it will be pretty close.

Forecast low temperatures for Friday morning. (National Weather Service)

Friday

After a cold and frosty start—Houston’s record low for this date is 35 degrees, and we may tie or beat that—sunshine will help push Friday’s highs up to around 60 degrees. The absence of winds should help this feel quite a bit warmer than Thursday. Low temperatures Friday night, too, should be 5 to 10 degrees warmer than Thursday night.

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