Hermann, MO 65041 Frost Dates
65041, near Hermann, MO: the frost window
The last spring frost here typically falls around 04/27, about 242 days from today. Fall's first freeze usually shows up around 10/13, roughly 168 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Hermann in Zone 6b (-5 to 0°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Hermann's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/27 isn't a guarantee
04/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/11 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/12 and only about 1 year in 10 sees frost after that.
Hermann against the rest of the dataset
Hermann's growing season runs about 168 days, ranking 29,722 of 40,283 US ZIP codes measured here, longest to shortest. Within MO, it ranks 1,108 of 1,129.
Learn more
Two guides worth reading on 65041: local microclimates, on what one yard in Hermann can differ from the 65041 normal, and zone vs. frost date, on why Zone 6b and Hermann's frost date answer different questions.