Hydro, OK 73048 Frost Dates
When can you plant in Hydro, OK?
Around 04/06 is the usual last spring frost, about 221 days away. The first fall frost typically arrives around 11/03, about 210 frost-free days later.
The USDA Plant Hardiness Zone Map puts Hydro in Zone 7b (5 to 10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 10 weeks of growing season left in Hydro before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/06 is the middle of 30 years of NOAA records, not a promise. Plant by 03/20 and you're betting against frost in roughly 9 years out of 10. 04/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Hydro compares
Hydro's growing season runs about 210 days, ranking 15,053 of 40,283 US ZIP codes measured here, longest to shortest. Within OK, it ranks 477 of 764.
Learn more
zone vs. frost date covers why Zone 7b and Hydro's frost date answer different questions. the frost range covers how to read the range around Hydro's dates instead of trusting one.