Murdock, MN 56271 Frost Dates
56271, near Murdock, MN: the frost window
Around 05/04 is the usual last spring frost, about 249 days away. Fall's first freeze usually shows up around 10/03, roughly 151 days after the last spring frost.
Murdock 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
Murdock's growing season runs out in roughly 5 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 Murdock's last frost
05/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/22 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/17 and only about 1 year in 10 sees frost after that.
Murdock against the rest of the dataset
Murdock's growing season runs about 151 days, ranking 35,161 of 40,283 US ZIP codes measured here, longest to shortest. Within MN, it ranks 500 of 943.
Learn more
Two guides worth reading on 56271: zone vs. frost date, on why Zone 4b and Murdock's frost date answer different questions, and the frost range, on how to read the range around Murdock's dates instead of trusting one.