Evansdale, IA 50704 Frost Dates
50704, near Evansdale, IA: the frost window
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.
Evansdale sits in USDA Zone 5a (-20 to -15°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
Evansdale's growing season runs out in roughly 6 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Evansdale's last frost
04/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/11 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/10 and only about 1 year in 10 sees frost after that.
Evansdale against the rest of the dataset
At roughly 165 frost-free days, Evansdale places 30,547 of 40,283 ZIP codes in this dataset. Within IA, it ranks 494 of 1,042.
Learn more
Two guides worth reading on 50704: zone vs. frost date, on why Zone 5a and Evansdale's frost date answer different questions, and the frost range, on how to read the range around Evansdale's dates instead of trusting one.