When is the last frost in Oklahoma City, OK?

The average last spring frost (50% probability of 32°F) in Oklahoma City is around April 4, based on NOAA/NCEI 1991–2020 normals at the Oklahoma City Will Rogers Ap, OK station (7.3 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 Oklahoma City?

The average first fall frost in Oklahoma City, OK is around November 2, giving roughly a 213-day frost-free growing season.

What planting zone is Oklahoma City, OK?

Oklahoma City 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 Oklahoma City?

In Oklahoma City, OK the warmest month is July (avg high 93.1°F) and the coldest is January (avg low 27°F). It averages about 36.4″ of precipitation a year and 6.7″ of snow.

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Oklahoma City, OK Planting Calendar & Frost Dates

USDA hardiness zone 7b · ZIP 73102 · elevation 392′ · NOAA & USDA data

Oklahoma City is in USDA hardiness zone 7b (winters can dip to 5 to 10°F), with a growing season of about 213 days between the average last spring frost (April 4) and first fall frost (November 2). The warmest month is July (avg high 93.1°F); the coldest is January (avg low 27°F). It averages 36.4″ of precipitation a year and 6.7″ 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 5 to 10°F

Last spring frost

April 4

avg (50% prob, 32°F)

First fall frost

November 2

avg (50% prob, 32°F)

Growing season

213 days

frost-free window

Warmest month

July

avg high 93.1°F

Month-by-month typical weather in Oklahoma City

Average conditions from the NOAA/NCEI 1991–2020 U.S. Climate Normals at Oklahoma City Will Rogers Ap, OK (7.3 mi away). Temperatures °F, precipitation & snow in inches.

Month	Avg high	Avg low	Mean	Precip (in)	Snow (in)
January	49.3	27	38.2	1.3	1.8
February	53.8	30.8	42.3	1.4	1.8
March	62.9	39.5	51.2	2.6	0.8
April	71.1	47.5	59.3	3.6	0
May	78.9	57.6	68.2	5.3	0
June	87.5	66.2	76.9	4.5	0
July	93.1	70.3	81.7	3.6	0
August	92.2	69.1	80.7	3.6	0
September	83.9	61.5	72.7	3.7	0
October	72.8	49.4	61.1	3.3	0
November	60.7	37.7	49.2	1.7	0.5
December	50.4	29.5	40	1.8	1.8

What to plant when in Oklahoma City

Crop	Season	What to do & when
Tomatoes	warm	Start seeds indoors: February 21 · Transplant out: April 11
Peppers	warm	Start seeds indoors: February 7 · Transplant out: April 18
Cucumbers	warm	Direct sow: April 11
Zucchini / squash	warm	Direct sow: April 11
Bush beans	warm	Direct sow: April 11
Sweet corn	warm	Direct sow: April 11
Basil	warm	Transplant out: April 11
Peas	cool	Sow (spring): February 28 · Sow (fall): September 7
Spinach	cool	Sow (spring): February 21 · Sow (fall): September 7
Lettuce	cool	Sow (spring): March 7 · Sow (fall): September 7
Kale	cool	Transplant (spring): March 14 · Sow (fall): August 24
Broccoli	cool	Transplant (spring): March 21
Carrots	cool	Sow (spring): March 14 · Sow (fall): August 24
Onions	cool	Transplant (spring): March 7
Potatoes	cool	Plant seed potatoes: March 21
Radishes	cool	Sow (spring): March 7 · Sow (fall): September 21

Dates are computed from Oklahoma City'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

Edmond, OK Norman, OK Stillwater, OK Enid, OK Lawton, 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 — Oklahoma City Will Rogers Ap, OK, 7.3 mi (confidence: high). Monthly weather normals: Oklahoma City Will Rogers Ap, OK, 7.3 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.