Oldenburg, IN 47036 Frost Dates
Oldenburg, IN: when does the frost end?
Typically, the last spring freeze lands around 04/20, roughly 235 days out. Fall's first freeze usually shows up around 10/21, roughly 182 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Oldenburg 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 8 weeks until Oldenburg's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Oldenburg's last frost
04/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/07 and only about 1 year in 10 sees frost after that.
Oldenburg against the rest of the dataset
Oldenburg's growing season runs about 182 days, ranking 24,265 of 40,283 US ZIP codes measured here, longest to shortest. Within IN, it ranks 445 of 927.
Learn more
Before leaning on 47036's figures: zone vs. frost date explains why Zone 6b and Oldenburg's frost date answer different questions, while the frost range explains how to read the range around Oldenburg's dates instead of trusting one.