Ogden, IL 61859 Frost Dates
Ogden, IL: when does the frost end?
Around 04/20 is the usual last spring frost, about 235 days away. Fall's first freeze usually shows up around 10/21, roughly 182 days after the last spring frost.
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 Ogden, not a forecast for this year.
Stretching the season past the first frost
With roughly 8 weeks until Ogden's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
04/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/07 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/07 and only about 1 year in 10 sees frost after that.
Ogden against the rest of the dataset
About 182 days separate Ogden's last and first frost, putting it 24,251 of 40,283 ZIP codes nationally. Within IL, it ranks 903 of 1,548.
Learn more
Before leaning on 61859's figures: local microclimates explains what one yard in Ogden can differ from the 61859 normal, while zone vs. frost date explains why Zone 6a and Ogden's frost date answer different questions.