Glenwood, IN 46133 Frost Dates
46133, near Glenwood, IN: the frost window
Around 04/27 is the usual last spring frost, about 242 days away. Fall's first freeze usually shows up around 10/09, roughly 164 days after the last spring frost.
Glenwood 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
Glenwood's growing season runs out in roughly 6 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 Glenwood's last frost
04/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/16 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/10 and only about 1 year in 10 sees frost after that.
Glenwood against the rest of the dataset
Glenwood's growing season runs about 164 days, ranking 31,201 of 40,283 US ZIP codes measured here, longest to shortest. Within IN, it ranks 899 of 927.
Learn more
Two guides worth reading on 46133: the frost range, on how to read the range around Glenwood's dates instead of trusting one, and local microclimates, on what one yard in Glenwood can differ from the 46133 normal.