Allen, NE 68710 Frost Dates
68710, near Allen, NE: the frost window
Around 05/02 is the usual last spring frost, about 247 days away. Fall's first freeze usually shows up around 10/04, roughly 154 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Allen in Zone 5a (-20 to -15°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Allen's growing season runs out in roughly 5 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Allen's last frost
05/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/16 and only about 1 year in 10 sees frost after that.
Allen against the rest of the dataset
Allen's growing season runs about 154 days, ranking 34,431 of 40,283 US ZIP codes measured here, longest to shortest. Within NE, it ranks 480 of 605.
Learn more
Two guides worth reading on 68710: local microclimates, on what one yard in Allen can differ from the 68710 normal, and zone vs. frost date, on why Zone 5a and Allen's frost date answer different questions.