Frost Dates for Galveston, TX 77550

Last spring frost February 12 · First fall frost December 9 · 300 frost-free days · USDA Zone 10a

Frost probability for 77550

Frost10%50%90%
Spring (last frost)March 16February 12January 10
Fall (first frost)November 19December 9January 1

Dates come from NOAA 1971–2000 freeze probabilities at the nearest reporting station (54.9 km away); the 50% date is the median year.

Frost dates by ZIP code in Galveston, TX

ZIPLast spring frost (50%)First fall frost (50%)Zone
77550February 12December 910a
77551February 12December 910a
77554January 31December 910a
77555February 12December 910a

Month by month in Galveston

MonthWhat to do
JanuaryStart herbs, basil, and squash indoors (4–6 weeks before frost). Direct sow peas, spinach, and lettuce if soil is workable.
FebruaryLast frost around February 12. Transplant cold-hardy crops (broccoli, kale, cabbage). Harden off tomato and pepper seedlings.
MarchFrost has passed. Transplant tomatoes, peppers, and basil outdoors. Direct sow beans, cucumbers, squash, and zucchini.
AprilSuccession plant lettuce and greens. Keep beds weeded and watered consistently.
MayHarvest regularly to encourage production. Monitor for pests and disease.
JuneMidsummer: harvest beans, zucchini, cucumbers. Start brassica seeds indoors for fall.
JulyDirect sow carrots and beets for fall harvest. Start fall broccoli and kale indoors.
AugustDirect sow carrots and beets for fall harvest. Start fall broccoli and kale indoors.
SeptemberDirect sow carrots and beets for fall harvest. Start fall broccoli and kale indoors.
OctoberDirect sow carrots and beets for fall harvest. Start fall broccoli and kale indoors.
NovemberFirst fall frost approaching (around December 9). Transplant fall brassicas. Sow spinach, arugula, and radishes.
DecemberFirst frost around December 9. Harvest tomatoes and peppers before frost. Cover cold-hardy crops with row covers to extend the season.

What grows in a 300-day season

Frequently Asked Questions

What is the last frost date for Galveston, TX (ZIP 77550)?

The median last spring frost date for Galveston, TX (ZIP code 77550) is around February 12. This is the 50th-percentile date — meaning half of all years see frost end before this date. Use the 10% and 90% dates to understand the full range of risk in your area.

What is the first fall frost date in Galveston, TX?

The median first fall frost date for Galveston, TX is around December 9. Plan to harvest or protect frost-sensitive crops like tomatoes and peppers at least a week before this date to avoid losses.

How long is the growing season in Galveston, TX?

The frost-free growing season in Galveston is about 300 days. This window — from your last spring frost to your first fall frost — is when warm-season vegetables thrive. Cold-hardy crops like kale, spinach, and peas can extend your season by weeks on either side.

What USDA hardiness zone is Galveston, TX?

Based on frost date patterns, Galveston falls approximately in 10a. USDA hardiness zones are determined by average annual minimum winter temperatures and guide both plant selection and planting timing for your location.

When should I start tomatoes indoors in Galveston, TX?

Start tomato seeds indoors 6–8 weeks before your last frost date (around February 12). For Galveston, that's roughly December 18 to January 1. Transplant outdoors 1–2 weeks after your last frost.

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