Argos, IN 46501 Frost Dates
46501, near Argos, IN: the frost window
Typically, the last spring freeze lands around 04/23, roughly 238 days out. Fall's first freeze usually shows up around 10/21, roughly 180 days after the last spring frost.
Argos 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
Argos's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Argos's last frost
04/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/09 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.
Argos against the rest of the dataset
About 180 days separate Argos's last and first frost, putting it 24,899 of 40,283 ZIP codes nationally. Within IN, it ranks 494 of 927.
Learn more
Two guides worth reading on 46501: zone vs. frost date, on why Zone 6a and Argos's frost date answer different questions, and the frost range, on how to read the range around Argos's dates instead of trusting one.