Porter, OK 74454 Frost Dates
When can you plant in Porter, OK?
Around 03/29 is the usual last spring frost, about 213 days away. The first fall frost typically arrives around 11/05, about 223 frost-free days later.
Zone 7b (5 to 10°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 Porter, not a forecast for this year.
What to do before the first frost
About 10 weeks of growing season left in Porter before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Porter's last frost
03/29 is the middle of 30 years of NOAA records, not a promise. Plant by 03/10 and you're betting against frost in roughly 9 years out of 10. 04/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Porter compares
Porter's growing season runs about 223 days, ranking 12,108 of 40,283 US ZIP codes measured here, longest to shortest. Within OK, it ranks 112 of 764.
Learn more
the frost range covers how to read the range around Porter's dates instead of trusting one. local microclimates covers what one yard in Porter can differ from the 74454 normal.