Cambridge, MN 55008 Frost Dates
55008, near Cambridge, MN: the frost window
The last spring frost here typically falls around 05/02, about 247 days from today. Fall's first freeze usually shows up around 10/04, roughly 153 days after the last spring frost.
Cambridge 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
Cambridge'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.
Why 05/02 isn't a guarantee
05/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/17 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/20 and only about 1 year in 10 sees frost after that.
Cambridge against the rest of the dataset
At roughly 153 frost-free days, Cambridge places 34,495 of 40,283 ZIP codes in this dataset. Within MN, it ranks 403 of 943.
Learn more
Two guides worth reading on 55008: the frost range, on how to read the range around Cambridge's dates instead of trusting one, and local microclimates, on what one yard in Cambridge can differ from the 55008 normal.