When is the last frost in Laredo, TX?

The average last spring frost (50% probability of 32°F) in Laredo is around January 20, based on NOAA/NCEI 1991–2020 normals at the Laredo Afb, TX station (2.6 mi away). Half of years it falls outside that date, so wait 1–2 weeks past it before setting out frost-tender plants.

When is the first fall frost in Laredo?

The average first fall frost in Laredo, TX is around December 25, giving roughly a 344-day frost-free growing season.

What planting zone is Laredo, TX?

Laredo is in USDA plant hardiness zone 9b (average annual extreme minimum temperature 25 to 30°F), from the 2023 USDA Plant Hardiness Zone Map.

What is the weather like in Laredo?

In Laredo, TX the warmest month is August (avg high 100.8°F) and the coldest is January (avg low 46.8°F). It averages about 19.7″ of precipitation a year.

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Laredo, TX Planting Calendar & Frost Dates

USDA hardiness zone 9b · ZIP 78040 · elevation 131′ · NOAA & USDA data

Laredo is in USDA hardiness zone 9b (winters can dip to 25 to 30°F), with a growing season of about 344 days between the average last spring frost (January 20) and first fall frost (December 25). The warmest month is August (avg high 100.8°F); the coldest is January (avg low 46.8°F). It averages 19.7″ of precipitation a year. Start cool-season crops several weeks before the last frost; wait until after it for tomatoes, peppers and other tender crops.

Hardiness zone

min temp 25 to 30°F

Last spring frost

January 20

avg (50% prob, 32°F)

First fall frost

December 25

avg (50% prob, 32°F)

Growing season

344 days

frost-free window

Warmest month

August

avg high 100.8°F

Month-by-month typical weather in Laredo

Average conditions from the NOAA/NCEI 1991–2020 U.S. Climate Normals at Laredo 2, TX (3.8 mi away). Temperatures °F, precipitation & snow in inches.

Month	Avg high	Avg low	Mean	Precip (in)	Snow (in)
January	68.4	46.8	57.6	0.8	0
February	73.9	51.7	62.8	0.7	0
March	80.8	58.3	69.5	1.3	0
April	88.4	64.9	76.7	1.3	0
May	94.1	71.5	82.8	2.8	0
June	99	76.2	87.6	1.8	0
July	100.3	77.1	88.7	1.9	0
August	100.8	77.4	89.1	1.6	0
September	94.1	73.1	83.6	3.9	0
October	87.1	65.8	76.5	1.7	0
November	76.5	55.6	66	1	0
December	68.9	48	58.5	1.1	0.1

What to plant when in Laredo

Crop	Season	What to do & when
Tomatoes	warm	Start seeds indoors: December 9 · Transplant out: January 27
Peppers	warm	Start seeds indoors: November 25 · Transplant out: February 3
Cucumbers	warm	Direct sow: January 27
Zucchini / squash	warm	Direct sow: January 27
Bush beans	warm	Direct sow: January 27
Sweet corn	warm	Direct sow: January 27
Basil	warm	Transplant out: January 27
Peas	cool	Sow (spring): December 16 · Sow (fall): October 30
Spinach	cool	Sow (spring): December 9 · Sow (fall): October 30
Lettuce	cool	Sow (spring): December 23 · Sow (fall): October 30
Kale	cool	Transplant (spring): December 30 · Sow (fall): October 16
Broccoli	cool	Transplant (spring): January 6
Carrots	cool	Sow (spring): December 30 · Sow (fall): October 16
Onions	cool	Transplant (spring): December 23
Potatoes	cool	Plant seed potatoes: January 6
Radishes	cool	Sow (spring): December 23 · Sow (fall): November 13

Dates are computed from Laredo's average frost dates using standard cool-/warm-season timing. They're a starting point — a cold spring, a warm microclimate, or a fast-maturing variety can shift them by a week or two.

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Gear that helps you plant on time

Some links below are Amazon affiliate links (tag theboringthin-20). If you buy through them we may earn a small commission at no extra cost to you — it keeps this almanac free. We only list generic, genuinely-useful categories.

Soil thermometer →Know when the ground is warm enough to sow — the honest signal, not the calendar.Seed-starting trays + dome →Start tomatoes & peppers indoors on the schedule below.Seedling heat mat →Warms the soil for faster, more even germination indoors.Floating row cover / frost cloth →Buys you 4–8°F to beat an early or late frost.Raised garden bed kit →Warms and drains faster in spring than in-ground soil.Garden gloves →Basic kit for transplant day.

Nearby cities in Texas

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Sources & method. Hardiness zone: 2023 USDA Plant Hardiness Zone Map (PRISM Climate Group, Oregon State University). Frost dates & growing season: NOAA/NCEI 1991–2020 U.S. Climate Normals, nearest station with published freeze normals — Laredo Afb, TX, 2.6 mi (confidence: high). Monthly weather normals: Laredo 2, TX, 3.8 mi (confidence: high). ZIP centroid from U.S. Census 2023 ZCTA data. Frost dates are the 50%-probability date — half of years frost occurs outside the stated date. Nothing here is invented; where the nearest station is far, we say so. Last updated 2026-07-22.