New Providence, IA 50206 Frost Dates
New Providence, IA: when does the frost end?
Typically, the last spring freeze lands around 04/27, roughly 242 days out. Fall's first freeze usually shows up around 10/10, roughly 165 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts New Providence 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 6 weeks until New Providence'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
04/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/13 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/08 and only about 1 year in 10 sees frost after that.
New Providence against the rest of the dataset
New Providence's growing season runs about 165 days, ranking 30,750 of 40,283 US ZIP codes measured here, longest to shortest. Within IA, it ranks 551 of 1,042.
Learn more
Before leaning on 50206's figures: the frost range explains how to read the range around New Providence's dates instead of trusting one, while local microclimates explains what one yard in New Providence can differ from the 50206 normal.