Lewiston, NE 68380 Frost Dates
Lewiston, NE: when does the frost end?
Around 04/22 is the usual last spring frost, about 237 days away. Fall's first freeze usually shows up around 10/20, roughly 179 days after the last spring frost.
Lewiston sits in USDA Zone 6a (-10 to -5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
With roughly 8 weeks until Lewiston's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/22 isn't a guarantee
04/22 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/05 and only about 1 year in 10 sees frost after that.
Lewiston against the rest of the dataset
At roughly 179 frost-free days, Lewiston places 25,534 of 40,283 ZIP codes in this dataset. Within NE, it ranks 82 of 605.
Learn more
Before leaning on 68380's figures: the frost range explains how to read the range around Lewiston's dates instead of trusting one, while local microclimates explains what one yard in Lewiston can differ from the 68380 normal.