Nemaha, IA 50567 Frost Dates
Nemaha, IA: when does the frost end?
Around 04/30 is the usual last spring frost, about 245 days away. Fall's first freeze usually shows up around 10/06, roughly 158 days after the last spring frost.
Zone 5a (-20 to -15°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Nemaha, not a forecast for this year.
Stretching the season past the first frost
With roughly 6 weeks until Nemaha's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Nemaha's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/11 and only about 1 year in 10 sees frost after that.
Nemaha against the rest of the dataset
At roughly 158 frost-free days, Nemaha places 33,177 of 40,283 ZIP codes in this dataset. Within IA, it ranks 827 of 1,042.
Learn more
Before leaning on 50567's figures: the frost range explains how to read the range around Nemaha's dates instead of trusting one, while local microclimates explains what one yard in Nemaha can differ from the 50567 normal.