Norway, IA 52354 Frost Dates
Norway, IA: when does the frost end?
The last spring frost here typically falls around 04/27, about 242 days from today. Fall's first freeze usually shows up around 10/11, roughly 165 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Norway 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 Norway'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 05/11 and only about 1 year in 10 sees frost after that.
Norway against the rest of the dataset
About 165 days separate Norway's last and first frost, putting it 30,706 of 40,283 ZIP codes nationally. Within IA, it ranks 537 of 1,042.
Learn more
Before leaning on 52354's figures: the frost range explains how to read the range around Norway's dates instead of trusting one, while local microclimates explains what one yard in Norway can differ from the 52354 normal.