Liscomb, IA 50148 Frost Dates
Liscomb, IA: when does the frost end?
Typically, the last spring freeze lands around 04/30, roughly 245 days out. Fall's first freeze usually shows up around 10/06, roughly 159 days after the last spring frost.
Liscomb 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 6 weeks until Liscomb's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
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 05/12 and only about 1 year in 10 sees frost after that.
Liscomb against the rest of the dataset
About 159 days separate Liscomb's last and first frost, putting it 32,762 of 40,283 ZIP codes nationally. Within IA, it ranks 799 of 1,042.
Learn more
Before leaning on 50148's figures: local microclimates explains what one yard in Liscomb can differ from the 50148 normal, while zone vs. frost date explains why Zone 5a and Liscomb's frost date answer different questions.