Poplar Bluff, MO 63901 Frost Dates
63901, near Poplar Bluff, MO: the frost window
The last spring frost here typically falls around 03/29, about 213 days from today. Fall's first freeze usually shows up around 11/05, roughly 222 days after the last spring frost.
Zone 7a (0 to 5°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 Poplar Bluff, not a forecast for this year.
Stretching the season past the first frost
Poplar Bluff's growing season runs out in roughly 10 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Poplar Bluff's last frost
03/29 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/10 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/12 and only about 1 year in 10 sees frost after that.
Poplar Bluff against the rest of the dataset
Poplar Bluff's growing season runs about 222 days, ranking 12,225 of 40,283 US ZIP codes measured here, longest to shortest. Within MO, it ranks 27 of 1,129.
Learn more
Two guides worth reading on 63901: zone vs. frost date, on why Zone 7a and Poplar Bluff's frost date answer different questions, and the frost range, on how to read the range around Poplar Bluff's dates instead of trusting one.