Massena, IA 50853 Frost Dates
Massena, 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 10/02, roughly 153 days after the last spring frost.
Massena sits in USDA Zone 5b (-15 to -10°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 5 weeks until Massena's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Massena's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/17 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.
Massena against the rest of the dataset
About 153 days separate Massena's last and first frost, putting it 34,617 of 40,283 ZIP codes nationally. Within IA, it ranks 934 of 1,042.
Learn more
Before leaning on 50853's figures: local microclimates explains what one yard in Massena can differ from the 50853 normal, while zone vs. frost date explains why Zone 5b and Massena's frost date answer different questions.