Nebraska frost dates

Across Nebraska, the average last spring frost is around April 30 and the average first fall frost around October 5 — roughly 158 frost-free days. USDA zones 4b, 5a, 5b.

Risk you accept	Last spring frost by	First fall frost by
Cautious (~10%)	May 14	September 21
Average (~50%)	April 30	October 5
Gambler (~90%)	April 16	October 19

→ Turn these into sowing dates with the Nebraska planting calendar, or look up an exact ZIP code.

Statewide average from NOAA/NCEI freeze normals. Cautious/gambler dates are about two weeks either side of the average.