Lathrop, MO 64465 Frost Dates
Lathrop, MO: when does the frost end?
Typically, the last spring freeze lands around 04/19, roughly 234 days out. Fall's first freeze usually shows up around 10/17, roughly 181 days after the last spring frost.
Zone 6a (-10 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 Lathrop, not a forecast for this year.
Stretching the season past the first frost
With roughly 7 weeks until Lathrop's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Lathrop's last frost
04/19 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/04 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/05 and only about 1 year in 10 sees frost after that.
Lathrop against the rest of the dataset
At roughly 181 frost-free days, Lathrop places 24,554 of 40,283 ZIP codes in this dataset. Within MO, it ranks 987 of 1,129.
Learn more
Before leaning on 64465's figures: local microclimates explains what one yard in Lathrop can differ from the 64465 normal, while zone vs. frost date explains why Zone 6a and Lathrop's frost date answer different questions.