Grandin, MO 63943 Frost Dates
When can you plant in Grandin, MO?
The last spring frost here typically falls around 04/12, about 227 days from today. The first fall frost typically arrives around 10/26, about 196 frost-free days later.
Grandin sits in USDA Zone 7a (0 to 5°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 8 weeks of growing season left in Grandin before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/12 isn't a guarantee
04/12 is the middle of 30 years of NOAA records, not a promise. Plant by 03/25 and you're betting against frost in roughly 9 years out of 10. 04/29 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Grandin compares
Grandin's growing season runs about 196 days, ranking 19,087 of 40,283 US ZIP codes measured here, longest to shortest. Within MO, it ranks 584 of 1,129.
Learn more
zone vs. frost date covers why Zone 7a and Grandin's frost date answer different questions. the frost range covers how to read the range around Grandin's dates instead of trusting one.