Twin Lakes, MN 56089 Frost Dates
Frost dates for Twin Lakes, MN, ZIP 56089
The last spring frost here typically falls around 04/27, about 242 days from today. The first fall frost typically arrives around 10/09, about 164 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 Twin Lakes, not a forecast for this year.
What to do before the first frost
Zone 5a around Twin Lakes has about 6 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.
How much risk comes with planting early here
04/27 is the middle of 30 years of NOAA records, not a promise. Plant by 04/12 and you're betting against frost in roughly 9 years out of 10. 05/10 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Twin Lakes compares
Twin Lakes's growing season runs about 164 days, ranking 31,234 of 40,283 US ZIP codes measured here, longest to shortest. Within MN, it ranks 122 of 943.
Learn more
the frost range explains how to read the range around Twin Lakes's dates instead of trusting one, and local microclimates explains what one yard in Twin Lakes can differ from the 56089 normal.