Battle Ground, IN 47920 Frost Dates
47920, near Battle Ground, IN: the frost window
Typically, the last spring freeze lands around 04/22, roughly 237 days out. Fall's first freeze usually shows up around 10/17, roughly 179 days after the last spring frost.
Battle Ground sits in USDA Zone 6a (-10 to -5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Battle Ground'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 04/22 isn't a guarantee
04/22 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/07 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/06 and only about 1 year in 10 sees frost after that.
Battle Ground against the rest of the dataset
Battle Ground's growing season runs about 179 days, ranking 25,351 of 40,283 US ZIP codes measured here, longest to shortest. Within IN, it ranks 534 of 927.
Learn more
Two guides worth reading on 47920: zone vs. frost date, on why Zone 6a and Battle Ground's frost date answer different questions, and the frost range, on how to read the range around Battle Ground's dates instead of trusting one.