Elba, MN 55910 Frost Dates
55910, near Elba, MN: the frost window
Around 04/23 is the usual last spring frost, about 238 days away. Fall's first freeze usually shows up around 10/16, roughly 175 days after the last spring frost.
Zone 4b (-25 to -20°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Elba, not a forecast for this year.
Stretching the season past the first frost
Elba'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 Elba's last frost
04/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/09 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/06 and only about 1 year in 10 sees frost after that.
Elba against the rest of the dataset
About 175 days separate Elba's last and first frost, putting it 27,286 of 40,283 ZIP codes nationally. Within MN, it ranks 61 of 943.
Learn more
Two guides worth reading on 55910: zone vs. frost date, on why Zone 4b and Elba's frost date answer different questions, and the frost range, on how to read the range around Elba's dates instead of trusting one.