St. Louis Park, MN 55416 Frost Dates
55416, near St. Louis Park, MN: the frost window
Typically, the last spring freeze lands around 04/29, roughly 244 days out. Fall's first freeze usually shows up around 10/12, roughly 163 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts St. Louis Park 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
St. Louis Park'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.
Why 04/29 isn't a guarantee
04/29 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/12 and only about 1 year in 10 sees frost after that.
St. Louis Park against the rest of the dataset
About 163 days separate St. Louis Park's last and first frost, putting it 31,314 of 40,283 ZIP codes nationally. Within MN, it ranks 150 of 943.
Learn more
Two guides worth reading on 55416: zone vs. frost date, on why Zone 5a and St. Louis Park's frost date answer different questions, and the frost range, on how to read the range around St. Louis Park's dates instead of trusting one.