Woodford County, Illinois · Frost dates

Woodford County frost dates.

First-frost, last-frost, and growing-season length for Woodford County, Illinois. Sourced from NOAA 1991-2020 Climate Normals.

Data confidence: high · USDA zone: 6a

32°F — light freeze

Last spring frost

10%
05-07
20%
05-02
50%
04-21
80%
04-12
90%
04-07

First fall frost

10%
10-03
20%
10-07
50%
10-17
80%
10-25
90%
10-30

28°F — killing freeze

Last spring freeze

10%
04-27
20%
04-19
50%
04-09
80%
04-01
90%
03-28

First fall freeze

10%
10-11
20%
10-17
50%
10-27
80%
11-05
90%
11-10

Growing season length (days, 28°F threshold)

Short year
167
Median
201
Long year
227

Source NOAA station

CONGERVILLE 2NW, IL US

11.8 mi · 30 yrs of record (19912020) · 640 ft elev.

Data from CONGERVILLE 2NW, IL US, 11.8 miles away with 30-year NOAA record (1991-2020).

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