Dunreith, IN 47337 Frost Dates
Frost dates for Dunreith, IN, ZIP 47337
Typically, the last spring freeze lands around 04/27, roughly 242 days out. The first fall frost typically arrives around 10/17, about 173 frost-free days later.
Dunreith 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.
What to do before the first frost
Zone 6a around Dunreith has about 7 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Dunreith's last frost
04/27 is the middle of 30 years of NOAA records, not a promise. Plant by 04/11 and you're betting against frost in roughly 9 years out of 10. 05/12 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Dunreith compares
Dunreith's growing season runs about 173 days, ranking 28,093 of 40,283 US ZIP codes measured here, longest to shortest. Within IN, it ranks 745 of 927.
Learn more
local microclimates explains what one yard in Dunreith can differ from the 47337 normal, and zone vs. frost date explains why Zone 6a and Dunreith's frost date answer different questions.