Arapaho, OK 73620 Frost Dates
Frost dates for Arapaho, OK, ZIP 73620
Typically, the last spring freeze lands around 04/13, roughly 228 days out. The first fall frost typically arrives around 10/28, about 197 frost-free days later.
Arapaho sits in USDA Zone 7b (5 to 10°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 7b around Arapaho has about 9 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Arapaho's last frost
04/13 is the middle of 30 years of NOAA records, not a promise. Plant by 03/31 and you're betting against frost in roughly 9 years out of 10. 04/27 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Arapaho compares
Arapaho's growing season runs about 197 days, ranking 18,753 of 40,283 US ZIP codes measured here, longest to shortest. Within OK, it ranks 686 of 764.
Learn more
zone vs. frost date explains why Zone 7b and Arapaho's frost date answer different questions, and the frost range explains how to read the range around Arapaho's dates instead of trusting one.