When is the last frost in Lawton, OK?

The average last spring frost (50% probability of 32°F) in Lawton is around April 1, based on NOAA/NCEI 1991–2020 normals at the Lawton Muni Ap, OK station (7.2 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 Lawton?

The average first fall frost in Lawton, OK is around November 5, giving roughly a 217-day frost-free growing season.

What planting zone is Lawton, OK?

Lawton is in USDA plant hardiness zone 7b (average annual extreme minimum temperature 5 to 10°F), from the 2023 USDA Plant Hardiness Zone Map.

What is the weather like in Lawton?

In Lawton, OK the warmest month is July (avg high 97.2°F) and the coldest is January (avg low 27.4°F). It averages about 27.5″ of precipitation a year.

Home › Oklahoma › Lawton

Lawton, OK Planting Calendar & Frost Dates

USDA hardiness zone 7b · ZIP 73501 · elevation 326′ · NOAA & USDA data

Lawton is in USDA hardiness zone 7b (winters can dip to 5 to 10°F), with a growing season of about 217 days between the average last spring frost (April 1) and first fall frost (November 5). The warmest month is July (avg high 97.2°F); the coldest is January (avg low 27.4°F). It averages 27.5″ 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 5 to 10°F

Last spring frost

April 1

avg (50% prob, 32°F)

First fall frost

November 5

avg (50% prob, 32°F)

Growing season

217 days

frost-free window

Warmest month

July

avg high 97.2°F

Month-by-month typical weather in Lawton

Average conditions from the NOAA/NCEI 1991–2020 U.S. Climate Normals at Lawton Muni Ap, OK (7.2 mi away). Temperatures °F, precipitation & snow in inches.

Month	Avg high	Avg low	Mean	Precip (in)	Snow (in)
January	53.7	27.4	40.5	1	–
February	58	31.9	44.9	0.9	–
March	66.8	40.5	53.7	1.9	–
April	74.8	48.5	61.7	2.5	–
May	83.2	58.9	71	3.7	–
June	92	68.1	80	4	–
July	97.2	71.5	84.4	2	–
August	96.4	70.7	83.6	3.2	–
September	87.6	62.6	75.1	2.8	–
October	76.5	50.3	63.4	2.5	–
November	64.1	38.2	51.2	1.5	–
December	54.3	29.1	41.7	1.5	–

What to plant when in Lawton

Crop	Season	What to do & when
Tomatoes	warm	Start seeds indoors: February 18 · Transplant out: April 8
Peppers	warm	Start seeds indoors: February 4 · Transplant out: April 15
Cucumbers	warm	Direct sow: April 8
Zucchini / squash	warm	Direct sow: April 8
Bush beans	warm	Direct sow: April 8
Sweet corn	warm	Direct sow: April 8
Basil	warm	Transplant out: April 8
Peas	cool	Sow (spring): February 25 · Sow (fall): September 10
Spinach	cool	Sow (spring): February 18 · Sow (fall): September 10
Lettuce	cool	Sow (spring): March 4 · Sow (fall): September 10
Kale	cool	Transplant (spring): March 11 · Sow (fall): August 27
Broccoli	cool	Transplant (spring): March 18
Carrots	cool	Sow (spring): March 11 · Sow (fall): August 27
Onions	cool	Transplant (spring): March 4
Potatoes	cool	Plant seed potatoes: March 18
Radishes	cool	Sow (spring): March 4 · Sow (fall): September 24

Dates are computed from Lawton'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 Oklahoma

Norman, OK Oklahoma City, OK Edmond, OK Stillwater, OK Enid, OK Tulsa, OK Broken Arrow, OK Muskogee, OK

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 — Lawton Muni Ap, OK, 7.2 mi (confidence: high). Monthly weather normals: Lawton Muni Ap, OK, 7.2 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.