Glenwood, MN 56334 Frost Dates
56334, near Glenwood, MN: the frost window
Typically, the last spring freeze lands around 05/11, roughly 256 days out. Fall's first freeze usually shows up around 09/27, roughly 139 days after the last spring frost.
Glenwood sits in USDA Zone 4b (-25 to -20°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
Glenwood's growing season runs out in roughly 4 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 Glenwood's last frost
05/11 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/27 and only about 1 year in 10 sees frost after that.
Glenwood against the rest of the dataset
About 139 days separate Glenwood's last and first frost, putting it 37,232 of 40,283 ZIP codes nationally. Within MN, it ranks 759 of 943.
Learn more
Two guides worth reading on 56334: the frost range, on how to read the range around Glenwood's dates instead of trusting one, and local microclimates, on what one yard in Glenwood can differ from the 56334 normal.