Medicine Park, OK 73503 Frost Dates
73503, near Medicine Park, OK: the frost window
Typically, the last spring freeze lands around 03/26, roughly 210 days out. Fall's first freeze usually shows up around 11/07, roughly 225 days after the last spring frost.
Zone 8a (10 to 15°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Medicine Park, not a forecast for this year.
Stretching the season past the first frost
Medicine Park's growing season runs out in roughly 10 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Medicine Park's last frost
03/26 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/04 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/14 and only about 1 year in 10 sees frost after that.
Medicine Park against the rest of the dataset
Medicine Park's growing season runs about 225 days, ranking 11,466 of 40,283 US ZIP codes measured here, longest to shortest. Within OK, it ranks 90 of 764.
Learn more
Two guides worth reading on 73503: local microclimates, on what one yard in Medicine Park can differ from the 73503 normal, and zone vs. frost date, on why Zone 8a and Medicine Park's frost date answer different questions.