Hanlontown, IA 50444 Frost Dates
Hanlontown, IA: when does the frost end?
Typically, the last spring freeze lands around 05/03, roughly 248 days out. Fall's first freeze usually shows up around 10/01, roughly 150 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Hanlontown in Zone 5a (-20 to -15°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 Hanlontown's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Hanlontown's last frost
05/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/15 and only about 1 year in 10 sees frost after that.
Hanlontown against the rest of the dataset
About 150 days separate Hanlontown's last and first frost, putting it 35,429 of 40,283 ZIP codes nationally. Within IA, it ranks 1,019 of 1,042.
Learn more
Before leaning on 50444's figures: local microclimates explains what one yard in Hanlontown can differ from the 50444 normal, while zone vs. frost date explains why Zone 5a and Hanlontown's frost date answer different questions.