Mexico, MO 65265 Frost Dates
Mexico, MO: when does the frost end?
Typically, the last spring freeze lands around 04/11, roughly 226 days out. Fall's first freeze usually shows up around 10/25, roughly 197 days after the last spring frost.
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 Mexico, not a forecast for this year.
Stretching the season past the first frost
With roughly 8 weeks until Mexico's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/11 isn't a guarantee
04/11 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/27 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/26 and only about 1 year in 10 sees frost after that.
Mexico against the rest of the dataset
At roughly 197 frost-free days, Mexico places 18,642 of 40,283 ZIP codes in this dataset. Within MO, it ranks 534 of 1,129.
Learn more
Before leaning on 65265's figures: the frost range explains how to read the range around Mexico's dates instead of trusting one, while local microclimates explains what one yard in Mexico can differ from the 65265 normal.