Kiefer, OK 74041 Frost Dates
Frost dates for Kiefer, OK, ZIP 74041
The last spring frost here typically falls around 03/30, about 214 days from today. The first fall frost typically arrives around 11/04, about 220 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 Kiefer, not a forecast for this year.
What to do before the first frost
Zone 7b around Kiefer has about 10 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 Kiefer's last frost
03/30 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. 04/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Kiefer compares
About 220 days separate Kiefer's last and first frost, putting it 12,828 of 40,283 ZIP codes nationally. Within OK, it ranks 201 of 764.
Learn more
local microclimates explains what one yard in Kiefer can differ from the 74041 normal, and zone vs. frost date explains why Zone 7b and Kiefer's frost date answer different questions.