St. Paul, MN 55102 Frost Dates
When can you plant in St. Paul, MN?
Typically, the last spring freeze lands around 04/25, roughly 240 days out. The first fall frost typically arrives around 10/12, about 169 frost-free days later.
St. Paul sits in USDA Zone 5a (-20 to -15°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.
What to do before the first frost
About 6 weeks of growing season left in St. Paul before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around St. Paul's last frost
04/25 is the middle of 30 years of NOAA records, not a promise. Plant by 04/09 and you're betting against frost in roughly 9 years out of 10. 05/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How St. Paul compares
About 169 days separate St. Paul's last and first frost, putting it 29,279 of 40,283 ZIP codes nationally. Within MN, it ranks 87 of 943.
Learn more
the frost range covers how to read the range around St. Paul's dates instead of trusting one. local microclimates covers what one yard in St. Paul can differ from the 55102 normal.