Hallett, OK 74034 Frost Dates
When can you plant in Hallett, OK?
Typically, the last spring freeze lands around 04/03, roughly 218 days out. The first fall frost typically arrives around 10/31, about 209 frost-free days later.
Zone 7a (0 to 5°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 Hallett, not a forecast for this year.
What to do before the first frost
About 9 weeks of growing season left in Hallett before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Hallett's last frost
04/03 is the middle of 30 years of NOAA records, not a promise. Plant by 03/18 and you're betting against frost in roughly 9 years out of 10. 04/21 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Hallett compares
Hallett's growing season runs about 209 days, ranking 15,444 of 40,283 US ZIP codes measured here, longest to shortest. Within OK, it ranks 508 of 764.
Learn more
the frost range covers how to read the range around Hallett's dates instead of trusting one. local microclimates covers what one yard in Hallett can differ from the 74034 normal.