Vadnais Heights, MN 55127 Frost Dates
Frost dates for Vadnais Heights, MN, ZIP 55127
Around 04/23 is the usual last spring frost, about 238 days away. The first fall frost typically arrives around 10/20, about 177 frost-free days later.
Zone 5a (-20 to -15°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Vadnais Heights, not a forecast for this year.
What to do before the first frost
Zone 5a around Vadnais Heights has about 8 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 04/23 isn't a guarantee
04/23 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. 05/07 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Vadnais Heights compares
At roughly 177 frost-free days, Vadnais Heights places 26,056 of 40,283 ZIP codes in this dataset. Within MN, it ranks 19 of 943.
Learn more
zone vs. frost date explains why Zone 5a and Vadnais Heights's frost date answer different questions, and the frost range explains how to read the range around Vadnais Heights's dates instead of trusting one.