Chickasha, OK 73023 Frost Dates
Frost dates for Chickasha, OK, ZIP 73023
Around 04/13 is the usual last spring frost, about 228 days away. The first fall frost typically arrives around 10/27, about 196 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 Chickasha, not a forecast for this year.
What to do before the first frost
Zone 7b around Chickasha 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.
Why 04/13 isn't a guarantee
04/13 is the middle of 30 years of NOAA records, not a promise. Plant by 03/29 and you're betting against frost in roughly 9 years out of 10. 04/28 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Chickasha compares
About 196 days separate Chickasha's last and first frost, putting it 18,918 of 40,283 ZIP codes nationally. Within OK, it ranks 693 of 764.
Learn more
local microclimates explains what one yard in Chickasha can differ from the 73023 normal, and zone vs. frost date explains why Zone 7b and Chickasha's frost date answer different questions.