Thedford, NE 69166 Frost Dates
Thedford, NE: when does the frost end?
Typically, the last spring freeze lands around 05/09, roughly 254 days out. Fall's first freeze usually shows up around 10/02, roughly 143 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Thedford in Zone 5b (-15 to -10°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 5 weeks until Thedford's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/09 isn't a guarantee
05/09 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/22 and only about 1 year in 10 sees frost after that.
Thedford against the rest of the dataset
Thedford's growing season runs about 143 days, ranking 36,651 of 40,283 US ZIP codes measured here, longest to shortest. Within NE, it ranks 568 of 605.
Learn more
Before leaning on 69166's figures: zone vs. frost date explains why Zone 5b and Thedford's frost date answer different questions, while the frost range explains how to read the range around Thedford's dates instead of trusting one.