Sperry, OK 74073 Frost Dates
When can you plant in Sperry, OK?
Around 03/31 is the usual last spring frost, about 215 days away. The first fall frost typically arrives around 11/04, about 220 frost-free days later.
The USDA Plant Hardiness Zone Map puts Sperry 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 Sperry before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 03/31 isn't a guarantee
03/31 is the middle of 30 years of NOAA records, not a promise. Plant by 03/11 and you're betting against frost in roughly 9 years out of 10. 04/15 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Sperry compares
At roughly 220 frost-free days, Sperry places 12,850 of 40,283 ZIP codes in this dataset. Within OK, it ranks 202 of 764.
Learn more
zone vs. frost date covers why Zone 7b and Sperry's frost date answer different questions. the frost range covers how to read the range around Sperry's dates instead of trusting one.