When the onshore flow returns in the winter, it can lead to the development of fog like parts of the region are seeing this morning? Why? Because as warmer winds flow across the shallow, colder waters near the shore and in bays, it cools the air to very nearly the dewpoint temperature. This allows water vapor to condense into tiny droplets suspended in the air. Fog typically dissipates as the air temperature rises faster than the dewpoint. Anyway, we’re going to see favorable conditions for fog the next several mornings across much of the region. Already, this morning, there’s a Dense Fog Advisory for coastal areas.

Wednesday

Today is the last day for the rest of week during which there won’t be at least a slight chance of rain. So that’s something, at least. But that doesn’t mean we’re going to see lots of sunshine. Rather, with winds shifting to come from the southeast later today we should see partly to mostly cloudy skies, and high temperatures in the upper 60s. Lows tonight probably won’t fall below 60 degrees for most of the region. Fog may become more widespread overnight.

Thursday and Friday

The end of the work week should see warmer weather, with highs in the low- to mid-70s and mostly cloudy skies. Houston will see decent chances for light rain, but the better chances will be across our northern counties, closer to an advancing front. This front should finally move offshore—briefly—on Friday night. This may allow temperatures Friday night to drop into the 50s for most of Houston.

Saturday and Sunday

Saturday will start off drier, but as this front quickly moves back onshore, we’ll see more clouds and later in the afternoon at least a slight chance of showers. Highs will be in the 60s. Sunday will be warmer and more humid as the southerly flow becomes more established, with highs in the 70s. Rain chances will probably be in the neighborhood of 40 percent, or so.

Next week

We’ll see more rain chances on Monday before a Pacific front—which just means it originated more from the Pacific Ocean than a colder, Arctic front diving down from Canada—brings us a modicum of cooler and drier air. Tuesday and Wednesday of next week may actually bring some sunshine, and lows in the 50s. A return to winter-like temperatures, which I’d say for Houston means lows at least in the 40s, seems unlikely before the very end of January.

As noted in Monday’s post, Houston’s weather is now making a pretty hard transition into something other than winter-like weather. Over the next week to 10 days we’ll see much warmer conditions—although I don’t think high temperatures will reach 80 degrees—to go along with plenty of humidity and lots of clouds. If there’s a silver lining its that, while we expect decent rain chances during the coming period, we don’t really have any indication that the region will see heavy rainfall.

Tuesday

Today’s weather will be driven by a cold front that is advancing toward Houston but will stall somewhere. But where? It now looks as though the front will reach the College Station area around sunset, and may sag toward Interstate 10 in Houston overnight and possibly reach the coast. The front will produce decent rain chances to the northwest of Houston today, but I think we’ll only see scattered to isolated showers in the metro area itself. Otherwise, we can expect highs in the low 70s today, with overnight lows depending on the progress of the front. Most areas will probably drop into the 50s.

Wednesday

With the weak front effectively stalled out over Houston, conditions on Wednesday will probably yield mostly cloudy skies, with highs somewhere in the 60s. Overnight lows on Wednesday night are unlikely to drop below 60 for much of the area as winds return from the southeast.

Thursday and Friday

The end of the work week should see highs in the 70s as Houston falls under a predominantly southerly flow, with mostly cloudy skies. Rain chances both days look decent—better for areas north of Interstate 10, likely—but again mostly we’re talking about accumulations of a few tenths of an inch of rain. A weak “backdoor” front should slide into Houston from the northeast on Friday night, bringing a brief cool down.

Saturday and Sunday

In the wake of the front, which is probable but not certain, Houston should see mostly cloudy skies and highs in the 60s on Saturday. This front should wash out pretty quickly, however, and as a result I’d anticipate rain chances returning on Sunday, along with highs in the 70s.

Next week

It looks like we’re going to have to wait until the Tuesday to Thursday time frame of next week before we see a stronger front that moves off the coast, clears our skies, and brings drier sunny weather back to Houston. That should offer us a decent reminder that it is still, in fact, January.

Overall it’s been a cold start to 2021 in Houston. Through the year’s first 17 days, the average temperature is running about 3 degrees below normal. And at the city’s official station at Bush Intercontinental Airport, since January 6, the overnight low has never been warmer than 42 degrees. Most nights have been in the 30s. But now, that’s about to change. It’s possible that much of Houston will not see lows below the 50s until near the end of January. “Winter” isn’t over, but the next stretch will definitely be warmer than normal. We’ll be trading clear and cool for cloudy and more muggy.

Monday

Houston will enjoy one more sunny day for the Martin Luther King Jr. holiday. But as high pressure departs the area, you may notice winds becoming more prominent from the south this afternoon. With partly to mostly sunny skies this afternoon, high temperatures will likely get near 70 degrees for much of the area. However, unlike the last 10 nights or so, temperatures will not drop significantly after sunset. Rather, with the southerly flow and increasing clouds, low temperatures tonight will probably only drop to around 60 degrees for most.

Tuesday and Wednesday

The mid-week weather will be determined by the progression of a cold front that seems most likely to stall out just to the northwest of the Houston region. For areas not reached by the front, which for now I will include pretty much all of the metro region, the effect of this will be a continuance of warm days, with highs around 70 degrees, and lows in the upper 50s to 60 degrees. We should see mostly cloudy skies and rain chances somewhere in the neighborhood of 30 percent. The better rain chances will fall closer to the front, with areas like College Station possibly seeing one-half inch of rain or so by Wednesday.

Thursday and Friday

The forecast gets less certain later in the week, as the frontal boundary may move around some. For now, I’d expect more mostly cloudy days in Houston, with low- to moderate rain chances. Overall accumulations for this week should be less than one-half inch for nearly all of the region—although northern areas, think Walker County, may see a bit more. Daytime highs will be in the 70s, with generally warm nights.

Saturday and Sunday

Neither of the weekend days is a clear winner, in terms of weather. Rain chances look low for Saturday, but non-zero. Sunday may be a bit higher. Either way, expect highs around 70 degrees, with lows in the upper 50s to low 60s. Skies will likely remain partly to mostly cloudy. A stronger front may finally push through the region next Monday or Tuesday to bring colder, clear weather back into Houston.

Good morning, and happy Friday. It’s a cool start to the day today, as we’re in the wake of a cold front that moved through last evening. We’ll have a round of gusty winds today before things settle down for the weekend.

Today & tonight

Today is starting off calm enough with clear skies, cool temperatures, and generally light winds. The clear skies and generally cool temperatures will stay with us today, with highs in the 50s. But the wind? That will begin to howl in just a few hours. We expect wind gusts of 25 to 35 mph area wide today, with some higher gusts possible in northern stretches of the region.

A wind advisory is posted for late morning and early to mid-afternoon. With high winds and low humidity, it’s a higher than usual brush/grass fire danger day today. Relative humidity could drop below 20 percent at times, a very dry day.

Winds will quickly settle down around and just after sunset, and they should be back to relatively calm conditions tonight, with lows near freezing north and west of Houston.

Look for 30s elsewhere, with near 40 at the coast, a chilly night.

Saturday through Monday

After today, fair, quiet weather will be the story through Monday. Look for sunny conditions with just a few clouds on Sunday and Monday. Temperatures will slowly warm through the period, topping off in the upper-50s on Saturday, low-60s on Sunday, and mid-60s on Monday. Morning lows will stay cool, with 30s to near 40° on Sunday morning and mostly 40s on Monday morning. Winds will stay light but could pick up a bit on Monday afternoon as onshore flow redevelops.

Tuesday and beyond

A pretty messy weather pattern is expected Tuesday through Thursday or even Friday before a cold front finally clears everything out. Onshore flow will transport really humid air back into the region Tuesday and Wednesday, likely leading to scattered showers. The problem in this period is that details around the forecast continue to fluctuate both in terms of how much rain we see and where it falls. We know that the potential will exist for heavy rain and at least some thunderstorms. But we don’t know if it’s more a story for our area, farther north toward Shreveport, LA, or for all of eastern Texas and western Louisiana. We will have a full update on this for you Sunday or (more likely) Monday.