Pleasant Hill, IA 50317 Frost Dates
Frost dates for Pleasant Hill, IA, ZIP 50317
The last spring frost here typically falls around 04/18, about 233 days from today. The first fall frost typically arrives around 10/20, about 184 frost-free days later.
Zone 5b (-15 to -10°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 Pleasant Hill, not a forecast for this year.
What to do before the first frost
Zone 5b around Pleasant Hill 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 Pleasant Hill's last frost
04/18 is the middle of 30 years of NOAA records, not a promise. Plant by 04/04 and you're betting against frost in roughly 9 years out of 10. 05/02 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Pleasant Hill compares
About 184 days separate Pleasant Hill's last and first frost, putting it 23,463 of 40,283 ZIP codes nationally. Within IA, it ranks 60 of 1,042.
Learn more
the frost range explains how to read the range around Pleasant Hill's dates instead of trusting one, and local microclimates explains what one yard in Pleasant Hill can differ from the 50317 normal.