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Frost dates and growing zones in Oklahoma

2 town pages so far. Zones from the 2023 USDA Plant Hardiness Zone Map, frost dates from NOAA 1991-2020 normals at the nearest weather station.

Towns covered so far in Oklahoma fall in USDA zones 7b. Median dates mean frost comes later (spring) or earlier (fall) in half of years.

Towns

Town	Zone	Median last frost	Median first frost
Oklahoma City	7b	Apr 4	Nov 2
Tulsa	7b	Mar 31	Nov 4