Hospers, IA 51238 Frost Dates
Hospers, IA: when does the frost end?
The last spring frost here typically falls around 05/05, about 250 days from today. Fall's first freeze usually shows up around 09/28, roughly 145 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Hospers 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 4 weeks until Hospers's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Hospers's last frost
05/05 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/24 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/18 and only about 1 year in 10 sees frost after that.
Hospers against the rest of the dataset
At roughly 145 frost-free days, Hospers places 36,251 of 40,283 ZIP codes in this dataset. Within IA, it ranks 1,039 of 1,042.
Learn more
Before leaning on 51238's figures: the frost range explains how to read the range around Hospers's dates instead of trusting one, while local microclimates explains what one yard in Hospers can differ from the 51238 normal.