Raytown, MO 64136 Frost Dates
Frost dates for Raytown, MO, ZIP 64136
The last spring frost here typically falls around 04/10, about 225 days from today. The first fall frost typically arrives around 10/27, about 198 frost-free days later.
Zone 6b (-5 to 0°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 Raytown, not a forecast for this year.
What to do before the first frost
Zone 6b around Raytown has about 9 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.
Why 04/10 isn't a guarantee
04/10 is the middle of 30 years of NOAA records, not a promise. Plant by 03/29 and you're betting against frost in roughly 9 years out of 10. 04/26 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Raytown compares
Raytown's growing season runs about 198 days, ranking 18,290 of 40,283 US ZIP codes measured here, longest to shortest. Within MO, it ranks 476 of 1,129.
Learn more
zone vs. frost date explains why Zone 6b and Raytown's frost date answer different questions, and the frost range explains how to read the range around Raytown's dates instead of trusting one.