Eldridge, IA 52809 Frost Dates
When can you plant in Eldridge, IA?
Around 04/21 is the usual last spring frost, about 236 days away. The first fall frost typically arrives around 10/17, about 176 frost-free days later.
The USDA Plant Hardiness Zone Map puts Eldridge 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 7 weeks of growing season left in Eldridge before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/21 isn't a guarantee
04/21 is the middle of 30 years of NOAA records, not a promise. Plant by 04/07 and you're betting against frost in roughly 9 years out of 10. 05/07 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Eldridge compares
About 176 days separate Eldridge's last and first frost, putting it 26,425 of 40,283 ZIP codes nationally. Within IA, it ranks 142 of 1,042.
Learn more
zone vs. frost date covers why Zone 5b and Eldridge's frost date answer different questions. the frost range covers how to read the range around Eldridge's dates instead of trusting one.