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    Frost dates · Illinois

    When is the first frost in Peoria?

    Peoria right now

    39°FClear skies

    • Today43°F / 33°FClear skies
    • Tomorrow48°F / 28°FClear skies
    • Monday51°F / 31°FClear skies
    Not a cloud. Not a plan.

    Live from OpenWeatherMap. Alerts from the National Weather Service.

    In a typical year, Peoria’s first frost comes around October 23 and its last around April 16.

    One year in ten the first frost comes as early as October 9, and nine years in ten it has arrived by November 3. One year in ten the last frost is over as early as April 2, and nine years in ten it is over by May 4. Peoria averages about 118 nights a year at 32°F or colder, with about 189 frost-free days in between in a typical year. It’s frost season here, and the last frost usually comes around April 16. That makes it the 47th earliest first frost of the 117 cities we track where it freezes most years.

    Last updated

    A freeze is in the forecast for the next 48 hours.

    Peoria gets its first frost in late October, and the Illinois River gets very misty about it.

    Live 48-hour check from OpenWeatherMap, refreshed about every half hour. Alerts from the National Weather Service.

    Frost dates, early, typical and late years

    Early year (1 in 10)TypicalLate year (1 in 10)
    First frostOctober 9October 23November 3
    Last frostApril 2April 16May 4

    A frost date here is a night when the official thermometer reads 32°F or colder. Frost on the ground can show up on clear, calm nights a few degrees milder.

    Cities with about the same first frost

    Every city’s frost dates, earliest first

    Source: NOAA U.S. Climate Normals, 1991 to 2020, station USW00014842.