Oklahoma frost dates by county and ZIP code
Across 664 Oklahoma ZIP codes the average last spring frost runs Mar 14 to Apr 26 and the average first fall frost Oct 17 to Nov 19 (50% odds, 32°F, NOAA 1991–2020 normals), with USDA hardiness zones. Download the table as CSV.
Plants for Oklahoma
Oklahoma's university or garden plant program: Oklahoma Proven, with a link to the official list. Not affiliated. All state plant programs.
Counties
- Adair
- Alfalfa
- Atoka
- Beaver
- Beckham
- Blaine
- Bryan
- Caddo
- Canadian
- Carter
- Cherokee
- Choctaw
- Cimarron
- Cleveland
- Coal
- Comanche
- Cotton
- Craig
- Creek
- Custer
- Delaware
- Dewey
- Ellis
- Garfield
- Garvin
- Grady
- Grant
- Greer
- Harmon
- Harper
- Haskell
- Hughes
- Jackson
- Jefferson
- Johnston
- Kay
- Kingfisher
- Kiowa
- Latimer
- Le Flore
- Lincoln
- Logan
- Love
- Major
- Marshall
- Mayes
- McClain
- McCurtain
- McIntosh
- Murray
- Muskogee
- Noble
- Nowata
- Okfuskee
- Oklahoma
- Okmulgee
- Osage
- Ottawa
- Pawnee
- Payne
- Pittsburg
- Pontotoc
- Pottawatomie
- Pushmataha
- Roger Mills
- Rogers
- Seminole
- Sequoyah
- Stephens
- Texas
- Tillman
- Tulsa
- Wagoner
- Washington
- Washita
- Woods
- Woodward
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