Marion, IN 46953 Frost Dates
Frost dates for Marion, IN, ZIP 46953
Around 04/26 is the usual last spring frost, about 241 days away. The first fall frost typically arrives around 10/20, about 175 frost-free days later.
Zone 6a (-10 to -5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Marion, not a forecast for this year.
What to do before the first frost
Zone 6a around Marion 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 Marion's last frost
04/26 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 Marion compares
About 175 days separate Marion's last and first frost, putting it 26,769 of 40,283 ZIP codes nationally. Within IN, it ranks 628 of 927.
Learn more
local microclimates explains what one yard in Marion can differ from the 46953 normal, and zone vs. frost date explains why Zone 6a and Marion's frost date answer different questions.