Bellevue, IA 52031 Frost Dates
52031, near Bellevue, IA: the frost window
Around 04/25 is the usual last spring frost, about 240 days away. Fall's first freeze usually shows up around 10/16, roughly 172 days after the last spring frost.
Bellevue 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
Bellevue's growing season runs out in roughly 7 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 Bellevue's last frost
04/25 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/10 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.
Bellevue against the rest of the dataset
About 172 days separate Bellevue's last and first frost, putting it 28,333 of 40,283 ZIP codes nationally. Within IA, it ranks 265 of 1,042.
Learn more
Two guides worth reading on 52031: zone vs. frost date, on why Zone 5a and Bellevue's frost date answer different questions, and the frost range, on how to read the range around Bellevue's dates instead of trusting one.