Lyman, NE 69352 Frost Dates
Lyman, NE: when does the frost end?
Typically, the last spring freeze lands around 05/24, roughly 269 days out. Fall's first freeze usually shows up around 09/20, roughly 117 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Lyman 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
With roughly 3 weeks until Lyman's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/24 isn't a guarantee
05/24 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/11 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/12 and only about 1 year in 10 sees frost after that.
Lyman against the rest of the dataset
At roughly 117 frost-free days, Lyman places 39,258 of 40,283 ZIP codes in this dataset. Within NE, it ranks 604 of 605.
Learn more
Before leaning on 69352's figures: the frost range explains how to read the range around Lyman's dates instead of trusting one, while local microclimates explains what one yard in Lyman can differ from the 69352 normal.