Frost dates 2026–2027

Frost dates for Seabrook, Texas

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Houston NWS Office, 10 mi away (close match).

Last spring frostJan 31
First fall frostDec 14
317 frost-free days
Last spring frostJan 311 year in 10 after Mar 5
First fall frostDec 141 year in 10 by Nov 19
Growing season317 daysbetween median 32°F dates
Hardiness zoneZone 9b25 to 30°F average extreme low

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Will it freeze in Seabrook in the next 7 nights?

No overnight lows at or below 32°F are forecast in Seabrook during the next 7 nights in the available NWS frost forecast.

Tonight: forecast low 66°F. Above 36°F.

NWS forecast period: Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST.

No nights at or below 36°F in the National Weather Service forecast for the next 7 nights.

Overnight lows from the National Weather Service forecast for this location. This covers the available forecast window, not the first freeze of the whole season. Frost can form above 32°F on clear, calm nights.

Frost and freeze probabilities

Freeze dates shift from year to year. Spring percentages describe the chance of a freeze after the stated date; fall percentages describe the chance of a freeze by that date. The 10% spring date is the cautious one: a later freeze happens about 1 year in 10.

These dates describe historical probabilities, not this year’s forecast or the earliest and latest possible freezes. Different weather stations or probability thresholds can produce different published dates for the same city.

Average first hard freeze in Seabrook

The median first fall hard-freeze date (28°F) is January 3, from NOAA’s 1991–2020 Climate Normals at Houston NWS Office. This is the 50% probability date, not a forecast for this year.

TemperatureLast spring date
90% · 50% · 10% chance of a later freeze
First fall date
10% · 50% · 90% chance of an earlier freeze
Season
36°F frost possible Jan 21 · Feb 22 · Mar 17 Nov 9 · Nov 29 · Dec 22 281 days
32°F freeze Dec 25 · Jan 31 · Mar 5 Nov 19 · Dec 14 · Jan 19 317 days
28°F hard freeze Dec 19 · Jan 17 · Feb 24 Dec 6 · Jan 3 · Feb 5 356 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00414333. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Houston NWS Office

Average low temperature by month

Months with lows near or below freezing carry frost risk

Where these frost dates come from

The frost dates for Seabrook, TX come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Houston NWS Office (station USC00414333, elevation 19 ft), 10 mi from Seabrook. Local conditions (valleys, hilltops, distance to water, city heat) can shift frost dates by days or weeks. The hardiness zone is from the 2023 USDA Plant Hardiness Zone Map (USDA ARS and Oregon State University PRISM). See our methodology.

Frost dates near Seabrook

CityDistanceLast spring frostFirst fall frost
La Porte, TX 6.2 mi Jan 31 Dec 14
Nassau Bay, TX 6.8 mi Jan 31 Dec 14
Webster, TX 8.7 mi Jan 31 Dec 14
Deer Park, TX 9.9 mi Feb 2 Dec 25
League City, TX 9.9 mi Jan 31 Dec 14
Pasadena, TX 11 mi Jan 30 Dec 28
Dickinson, TX 11 mi Jan 31 Dec 14
Baytown, TX 12 mi Feb 20 Dec 4
Texas City, TX 12 mi Jan 25 Jan 1
Friendswood, TX 14 mi Jan 31 Dec 27

Frequently asked questions

When is the last frost in Seabrook?

On average, the last spring frost (32°F) in Seabrook is around January 31. In about 1 year in 10 it comes after March 5, and in 9 years in 10 it comes after December 25.

When is the first frost in Seabrook?

The first fall frost (32°F) usually arrives around December 14. There’s a 10% chance of a freeze by November 19 and a 90% chance by January 19.

Can it frost in Seabrook after the last frost date?

Yes. Frost can form on clear, calm nights even when the air stays above 32°F. Temperatures of 36°F or lower, cold enough for frost on exposed plants, have a 50% chance of occurring after February 22.

What growing zone is Seabrook?

Seabrook is in USDA Plant Hardiness Zone 9b (average annual extreme minimum temperature 25 to 30°F), based on the 2023 USDA map for ZIP code 77586. See growing zones in Texas.

More: all Texas frost dates · Texas growing zones · frost vs. freeze