Freeze Ready: A Winter Prep Guide for Heights Homes & Gardens

Houston freezes do not happen often, but when they do, they are a neighborhood event, and the Heights has more at risk than most: century-old bungalows with exposed plumbing underneath, tropical gardens that have thrived all year, and neighbors who may not be ready. The good news is that almost all the damage from a hard freeze is preventable. Here is how to get your home, garden, pets, and people ready, based on the city's official guidance and the lessons of recent winters.

Know Your Freeze Math

According to NOAA's 1991-2020 climate normals, Houston's average first freeze arrives around December 9, with the typical range running from late November through mid-December. Some winters come early, some come late, and in rare warm years the city never hits 32 degrees at all, but the smart money says to have everything ready by mid-November and stay ready through January. A freeze warning means temperatures at or below 32, and the city treats a hard freeze seriously when the forecast calls for 24 degrees (or 15 degrees with windchill) for at least two hours.

Pipes First, Especially Under Old Heights Bungalows

The city's freeze guidance starts with pipes, and Heights homes have a special challenge: many of the neighborhood's pier-and-beam bungalows run their plumbing under the house, exposed to the air, which is exactly where freezes hit first. The official checklist from Houston Public Works includes wrapping exposed pipes in pipe insulation, opening kitchen and bathroom cabinet doors so warm indoor air reaches the plumbing, locating your main water shut-off valve and making sure it works, disconnecting garden hoses, and shutting off and draining outdoor sprinkler and backflow systems. On the drip question, the city advises against dripping faucets as a general practice, only a slow trickle from the single faucet farthest from the main if you use one at all. Put this on the same fall list as the rest of your seasonal home care and you will be done before the first cold front.

Plants: Cover, Bring In, or Harvest

A Heights front yard in December is a greenhouse full of tropicals that do not know they live in Texas. Cold-sensitive plants like hibiscus, bougainvillea, citrus, palms, and bananas should be covered with frost cloth or old bed sheets draped all the way to the ground, which traps the earth's heat, while potted plants can simply come onto the porch, into the garage, or under the carport. Many gardeners also water the soil the afternoon before a freeze, because moist soil holds more heat than dry soil. If you still have tomatoes, peppers, or herbs hanging on, harvest them the day before, they will not survive the night. For everything else, November is also the perfect moment to tend your garden beds ahead of winter, since cool-season crops actually relish the weather that makes tropicals shiver.

Pets & People: The Other P's

The city's winter weather messaging boils down to the four P's: people, pets, plants, and pipes. Pets come inside, full stop, and outdoor animals need a warm, dry, wind-free space if they cannot come in. For people, check on elderly and disabled neighbors, especially in a neighborhood with as many longtime residents as the Heights, and keep emergency supplies on hand: blankets, water, extra clothing, flashlights, phone chargers, and medication. If you use a space heater, keep it at least three feet from anything flammable and never leave it running unattended. If you use a portable generator, run it outside and far from windows, never in a garage, because carbon monoxide is silent. The neighborhood civic clubs and associations are a great network for checking on the block when a freeze is forecast.

Warming Centers & Staying in the Know

When a hard freeze is forecast, the City of Houston opens warming centers, and getting there is free: METRO rides to the centers are free during activation. The city's threshold for opening them is a forecast of 24 degrees, or 15 degrees with windchill, for at least two hours, and since the January 2026 Arctic blast, every city warming center site is equipped with a generator through a partnership with CenterPoint Energy, so they stay warm even if the grid wobbles. To stay ahead of it, register for AlertHouston, keep ReadyHarris on your phone, and bookmark the Houston Office of Emergency Management's winter weather page at houstonoem.org/winterweather. For shelter help, 211 is the number to know. If the power does go out, keep interior doors closed to trap heat, dress in layers, and never use an oven to heat the house.

During & After the Freeze

If a pipe does freeze, act calmly: keep the faucet open, because relief pressure helps prevent a burst, and if you see a leak, turn off the main valve and call a plumber. After it thaws, turn things back on slowly and watch for drips. Keep the emergency kit you likely already built for hurricane season stocked through winter, it covers most of what a freeze throws at you, and add a few extra blankets and a battery radio for the cold months.

A Heights freeze is a two-day weather event and a one-day prep list. Wrap the pipes, cover the plants, bring in the pets, check on your neighbors, and you will spend the cold snaps cozy instead of scrambling. That is the Heights way, and it is one of the reasons this neighborhood has weathered every freeze since 1891. Compiled by the Houston Heights Guide, curated by the Shawn Manderscheid Team, for the neighbors we have helped call this neighborhood home for over 25 years.