When is the last frost in Grand Prairie, TX?

The average last spring frost (50% probability of 32°F) in Grand Prairie is around March 9, based on NOAA/NCEI 1991–2020 normals at the Arlington Six Flags, TX station (4.1 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 Grand Prairie?

The average first fall frost in Grand Prairie, TX is around November 20, giving roughly a 253-day frost-free growing season.

What planting zone is Grand Prairie, TX?

Grand Prairie is in USDA plant hardiness zone 8b (average annual extreme minimum temperature 15 to 20°F), from the 2023 USDA Plant Hardiness Zone Map.

What is the weather like in Grand Prairie?

In Grand Prairie, TX the warmest month is August (avg high 94.5°F) and the coldest is January (avg low 34.3°F). It averages about 40.1″ of precipitation a year and 0.8″ of snow.

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Grand Prairie, TX Planting Calendar & Frost Dates

USDA hardiness zone 8b · ZIP 75050 · elevation 163′ · NOAA & USDA data

Grand Prairie is in USDA hardiness zone 8b (winters can dip to 15 to 20°F), with a growing season of about 253 days between the average last spring frost (March 9) and first fall frost (November 20). The warmest month is August (avg high 94.5°F); the coldest is January (avg low 34.3°F). It averages 40.1″ of precipitation a year and 0.8″ of snow, mostly mid-winter. 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 15 to 20°F

Last spring frost

March 9

avg (50% prob, 32°F)

First fall frost

November 20

avg (50% prob, 32°F)

Growing season

253 days

frost-free window

Warmest month

August

avg high 94.5°F

Month-by-month typical weather in Grand Prairie

Average conditions from the NOAA/NCEI 1991–2020 U.S. Climate Normals at Arlington Six Flags, TX (4.1 mi away). Temperatures °F, precipitation & snow in inches.

Month	Avg high	Avg low	Mean	Precip (in)	Snow (in)
January	55	34.3	44.7	2.7	0.1
February	59.4	37.9	48.6	3.2	0.4
March	67.1	46	56.6	3.5	0
April	74.4	53.7	64	3.3	0
May	81.6	63.2	72.4	4.7	0
June	90	71.6	80.8	3.8	0
July	94.4	75.1	84.8	2.5	0
August	94.5	74.2	84.4	2.4	0
September	87.6	67.3	77.4	3.5	0
October	77	55.4	66.2	4.8	0
November	65	45.1	55	2.8	0
December	57	36.6	46.8	3	0.3

What to plant when in Grand Prairie

Crop	Season	What to do & when
Tomatoes	warm	Start seeds indoors: January 26 · Transplant out: March 16
Peppers	warm	Start seeds indoors: January 12 · Transplant out: March 23
Cucumbers	warm	Direct sow: March 16
Zucchini / squash	warm	Direct sow: March 16
Bush beans	warm	Direct sow: March 16
Sweet corn	warm	Direct sow: March 16
Basil	warm	Transplant out: March 16
Peas	cool	Sow (spring): February 2 · Sow (fall): September 25
Spinach	cool	Sow (spring): January 26 · Sow (fall): September 25
Lettuce	cool	Sow (spring): February 9 · Sow (fall): September 25
Kale	cool	Transplant (spring): February 16 · Sow (fall): September 11
Broccoli	cool	Transplant (spring): February 23
Carrots	cool	Sow (spring): February 16 · Sow (fall): September 11
Onions	cool	Transplant (spring): February 9
Potatoes	cool	Plant seed potatoes: February 23
Radishes	cool	Sow (spring): February 9 · Sow (fall): October 9

Dates are computed from Grand Prairie'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 — Arlington Six Flags, TX, 4.1 mi (confidence: high). Monthly weather normals: Arlington Six Flags, TX, 4.1 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.