Solway, MN 56678 Frost Dates
Frost dates for Solway, MN, ZIP 56678
The last spring frost here typically falls around 05/18, about 263 days from today. The first fall frost typically arrives around 09/27, about 130 frost-free days later.
Solway sits in USDA Zone 3b (-35 to -30°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
Zone 3b around Solway has about 4 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
05/18 is the middle of 30 years of NOAA records, not a promise. Plant by 05/03 and you're betting against frost in roughly 9 years out of 10. 05/31 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Solway compares
About 130 days separate Solway's last and first frost, putting it 38,428 of 40,283 ZIP codes nationally. Within MN, it ranks 862 of 943.
Learn more
zone vs. frost date explains why Zone 3b and Solway's frost date answer different questions, and the frost range explains how to read the range around Solway's dates instead of trusting one.