Astoria, IL 61501 Frost Dates
Astoria, IL: when does the frost end?
The last spring frost here typically falls around 04/17, about 232 days from today. Fall's first freeze usually shows up around 10/19, roughly 185 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 Astoria, not a forecast for this year.
Stretching the season past the first frost
With roughly 7 weeks until Astoria's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Astoria's last frost
04/17 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/02 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/03 and only about 1 year in 10 sees frost after that.
Astoria against the rest of the dataset
At roughly 185 frost-free days, Astoria places 23,246 of 40,283 ZIP codes in this dataset. Within IL, it ranks 836 of 1,548.
Learn more
Before leaning on 61501's figures: local microclimates explains what one yard in Astoria can differ from the 61501 normal, while zone vs. frost date explains why Zone 6a and Astoria's frost date answer different questions.