Rolla, MO 65409 Frost Dates
When can you plant in Rolla, MO?
The last spring frost here typically falls around 04/05, about 220 days from today. The first fall frost typically arrives around 11/01, about 207 frost-free days later.
Rolla 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
About 9 weeks of growing season left in Rolla before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Rolla's last frost
04/05 is the middle of 30 years of NOAA records, not a promise. Plant by 03/21 and you're betting against frost in roughly 9 years out of 10. 04/22 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Rolla compares
At roughly 207 frost-free days, Rolla places 15,797 of 40,283 ZIP codes in this dataset. Within MO, it ranks 199 of 1,129.
Learn more
the frost range covers how to read the range around Rolla's dates instead of trusting one. local microclimates covers what one yard in Rolla can differ from the 65409 normal.