Warsaw, IN 46581 Frost Dates
Frost dates for Warsaw, IN, ZIP 46581
The last spring frost here typically falls around 04/24, about 239 days from today. The first fall frost typically arrives around 10/24, about 182 frost-free days later.
Warsaw 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 Warsaw has about 8 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 Warsaw's last frost
04/24 is the middle of 30 years of NOAA records, not a promise. Plant by 04/09 and you're betting against frost in roughly 9 years out of 10. 05/10 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Warsaw compares
Warsaw's growing season runs about 182 days, ranking 24,093 of 40,283 US ZIP codes measured here, longest to shortest. Within IN, it ranks 424 of 927.
Learn more
the frost range explains how to read the range around Warsaw's dates instead of trusting one, and local microclimates explains what one yard in Warsaw can differ from the 46581 normal.