Newburg, MO 65550 Frost Dates
65550, near Newburg, MO: the frost window
Typically, the last spring freeze lands around 04/05, roughly 220 days out. Fall's first freeze usually shows up around 11/01, roughly 207 days after the last spring frost.
Newburg 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.
Stretching the season past the first frost
Newburg's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/05 isn't a guarantee
04/05 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/21 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/22 and only about 1 year in 10 sees frost after that.
Newburg against the rest of the dataset
About 207 days separate Newburg's last and first frost, putting it 15,874 of 40,283 ZIP codes nationally. Within MO, it ranks 211 of 1,129.
Learn more
Two guides worth reading on 65550: zone vs. frost date, on why Zone 6b and Newburg's frost date answer different questions, and the frost range, on how to read the range around Newburg's dates instead of trusting one.