Lyman, NE 82218 Frost Dates
Lyman, NE: when does the frost end?
Around 05/11 is the usual last spring frost, about 256 days away. Fall's first freeze usually shows up around 09/29, roughly 139 days after the last spring frost.
Lyman sits in USDA Zone 5a (-20 to -15°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 5 weeks until Lyman's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Lyman's last frost
05/11 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/26 and only about 1 year in 10 sees frost after that.
Lyman against the rest of the dataset
Lyman's growing season runs about 139 days, ranking 37,282 of 40,283 US ZIP codes measured here, longest to shortest. Within NE, it ranks 589 of 605.
Learn more
Before leaning on 82218's figures: local microclimates explains what one yard in Lyman can differ from the 82218 normal, while zone vs. frost date explains why Zone 5a and Lyman's frost date answer different questions.