Gretna, NE 68136 Frost Dates
When can you plant in Gretna, NE?
The last spring frost here typically falls around 04/21, about 236 days from today. The first fall frost typically arrives around 10/18, about 179 frost-free days later.
Zone 6a (-10 to -5°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 Gretna, not a forecast for this year.
What to do before the first frost
About 7 weeks of growing season left in Gretna before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/21 is the middle of 30 years of NOAA records, not a promise. Plant by 04/05 and you're betting against frost in roughly 9 years out of 10. 05/04 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Gretna compares
About 179 days separate Gretna's last and first frost, putting it 25,249 of 40,283 ZIP codes nationally. Within NE, it ranks 67 of 605.
Learn more
zone vs. frost date covers why Zone 6a and Gretna's frost date answer different questions. the frost range covers how to read the range around Gretna's dates instead of trusting one.