Windsor Heights, IA 50310 Frost Dates
When can you plant in Windsor Heights, IA?
Typically, the last spring freeze lands around 04/18, roughly 233 days out. The first fall frost typically arrives around 10/20, about 184 frost-free days later.
The USDA Plant Hardiness Zone Map puts Windsor Heights in Zone 5b (-15 to -10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 8 weeks of growing season left in Windsor Heights before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/18 isn't a guarantee
04/18 is the middle of 30 years of NOAA records, not a promise. Plant by 04/04 and you're betting against frost in roughly 9 years out of 10. 05/02 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Windsor Heights compares
About 184 days separate Windsor Heights's last and first frost, putting it 23,502 of 40,283 ZIP codes nationally. Within IA, it ranks 64 of 1,042.
Learn more
the frost range covers how to read the range around Windsor Heights's dates instead of trusting one. local microclimates covers what one yard in Windsor Heights can differ from the 50310 normal.