Linn, MO 65051 Frost Dates
Frost dates for Linn, MO, ZIP 65051
Around 04/11 is the usual last spring frost, about 226 days away. The first fall frost typically arrives around 10/21, about 191 frost-free days later.
Linn sits in USDA Zone 6b (-5 to 0°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 6b around Linn 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.
How much risk comes with planting early here
04/11 is the middle of 30 years of NOAA records, not a promise. Plant by 03/28 and you're betting against frost in roughly 9 years out of 10. 04/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Linn compares
Linn's growing season runs about 191 days, ranking 20,811 of 40,283 US ZIP codes measured here, longest to shortest. Within MO, it ranks 734 of 1,129.
Learn more
zone vs. frost date explains why Zone 6b and Linn's frost date answer different questions, and the frost range explains how to read the range around Linn's dates instead of trusting one.