Good morning. As you have probably heard by now, Houston faces the prospect of a hard freeze next week as an Arctic front moves through much of the continental United States. This will be serious cold for the Houston region, and will warrant some preparation. However, this is unlikely to be a disaster on the level of the February 2021 event that sapped the power grid and caused widespread pipe failures. It should be more akin to the February 2022 freeze, which the power grid (and most residences) tolerated much better.

In terms of air temperatures, we are going to see some seriously cold (for Houston) weather next Monday night and Tuesday night. While there is still considerable uncertainty in how far the mercury will drop, lows are likely to drop into the upper teens to mid-20s for much of the Houston metro area. Here are some suggestions for preparing for this event:
Plants: Bring potted plants inside your garage or home. Apply a thick layer of mulch around ground-based plants, and water them. Cover sensitive plants with a sheet.
Pipes: Cover or insulate exposed pipes, including those under raised homes. Turn off and drain water sprinkling systems. Indoors, open sink cabinets to expose pipes to inner warmth.
Pets: Bring pets indoors and ensure adequate warmth for livestock.
People: Check on your family and neighbors to ensure their homes are winterized, or see if they need a warm place to stay.
Wednesday
Winds have already shifted to come from the south this morning, so after a chilly start in the upper 30s we are going to see highs push into the mid- to upper-60s beneath sunny skies. Winds will at times turn a bit gusty. Lows tonight will only drop into the mid-50s. The combination of light winds, warm air, and cool ground will lead to the likely development of fog tonight.
Thursday
That fog will be thickest on Thursday morning, and you’ll probably want to leave some extra time for the morning commute or getting to school. It could linger into the mid-morning hours. Skies will then turn partly sunny, with high temperatures likely reaching the mid-70s. A robust cold front will approach and move through the Houston region on Thursday night. This could result in a broken line of showers and thunderstorms, but at this point accumulations look slight. We can’t entirely rule out some damaging winds or hail with the front, but overall severe storm chances seem fairly low.

Friday
This will be a sunny and chilly day, with high temperatures of about 60 degrees. Winds will be very gusty, perhaps up to 35 or 40 mph during the afternoon hours. Winds should slacken somewhat on Friday night, with clear skies allowing temperatures to drop to near, or just above freezing in the Houston metro area.
Saturday
This should be a pleasant, sunny and winterlike day in Houston. Look for highs of around 60 degrees. Lows on Saturday night will drop into the mid-40s.
Sunday
Skies will be partly to mostly sunny. If you’re running the marathon, after the chilly start in the 40s, we can expect temperatures to reach about 60 degrees by noon, and then a bit warmer during the afternoon. The air will feel reasonably dry. Winds during the run will be out of the south at 10 to 15 mph.
The Arctic front will be arriving later on Sunday in the Houston metro area, likely during the evening hours. There may be a bit of precipitation with the front, but it looks like this will end before temperatures drop below freezing—so at this point I would bet against snow, sleet, or freezing rain. Lows on Sunday night should drop to around freezing in Houston.
Next week
As we start the week, M.L.K. Day is going to be cold. High temperatures may not climb out of the 30s, with a mix of sunshine and clouds. So, brrrr. Temperatures bottom out on Monday and Tuesday nights, with lows likely dropping into the upper teens to lower 20s for much of the Houston metro area. We’re far enough out that some uncertainty remains in how far temperatures will drop (on the lower end, mid-teens are possible, and on the upper end most of the region could stay above 25 degrees). Expect highs to rebound into the 50s on Wednesday, with nights likely staying above freezing after that—but still cold.
