Balsam Lake, WI 54810 Frost Dates
Frost dates for Balsam Lake, WI, ZIP 54810
Around 05/06 is the usual last spring frost, about 251 days away. The first fall frost typically arrives around 10/04, about 149 frost-free days later.
Balsam Lake 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.
What to do before the first frost
Zone 4b around Balsam Lake has about 5 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.
The actual range around Balsam Lake's last frost
05/06 is the middle of 30 years of NOAA records, not a promise. Plant by 04/23 and you're betting against frost in roughly 9 years out of 10. 05/20 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Balsam Lake compares
About 149 days separate Balsam Lake's last and first frost, putting it 35,540 of 40,283 ZIP codes nationally. Within WI, it ranks 600 of 860.
Learn more
zone vs. frost date explains why Zone 4b and Balsam Lake's frost date answer different questions, and the frost range explains how to read the range around Balsam Lake's dates instead of trusting one.