Oklahoma City, Oklahoma: freeze dates & growing season

Three different things get called “Oklahoma City” here, so this page is explicit about all three: the metro label (Oklahoma City), the anchor geography (Census ZCTA 73102, a downtown ZIP-code area), and the climate record (the NOAA station below). Windows are calculated from the station — not from your street address.

Climate basis: NOAA station Oklahoma City Will Rogers AP, OK (USW00013967), 7 mi (12 km) from the ZCTA 73102 centroid, elevation 1285 ft, on the 1991–2020 climate normals.

Last spring freezeApril 41-in-10 after Apr 20

First fall freezeNovember 21-in-10 before Oct 21

Frost-free season≈ 213 daysmedian at 32°F

Hard freeze, 28°Mar 21 – Nov 11kills even hardy greens

USDA zone7b5 to 10°F winter low — not frost timing

The year

indoors under lights
in the garden
frost-free season
1-in-10 years still freeze to Apr 20

The Oklahoma City year: hatched areas are the freeze-likely seasons in 1991–2020 normals.

What that means in practice

Tomatoes: plant April 11 – April 25
Peas: plant February 21 – March 7
Garlic: plant cloves November 9 – November 16

All 79 crops in Oklahoma City

These windows describe typical years (1991–2020 climate normals), not this year's forecast. Freezes happen outside them — especially in frost pockets, valleys, and urban edges. Watch the forecast before committing tender plants.

Check a specific ZIP instead

Metro climates vary — elevation, water, and urban heat shift freeze dates by days to weeks. Look up your exact ZIP:

Nearby reviewed metros

Tulsa, OK · Wichita, KS · Dallas, TX · Kansas City, MO · Little Rock, AR