Rolla, KS 67954 Frost Dates
Rolla, KS: when does the frost end?
Typically, the last spring freeze lands around 04/27, roughly 242 days out. Fall's first freeze usually shows up around 10/19, roughly 173 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Rolla 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
With roughly 7 weeks until Rolla's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Rolla's last frost
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 05/09 and only about 1 year in 10 sees frost after that.
Rolla against the rest of the dataset
Rolla's growing season runs about 173 days, ranking 28,065 of 40,283 US ZIP codes measured here, longest to shortest. Within KS, it ranks 620 of 745.
Learn more
Before leaning on 67954's figures: zone vs. frost date explains why Zone 6b and Rolla's frost date answer different questions, while the frost range explains how to read the range around Rolla's dates instead of trusting one.