Stark County, Illinois · Frost dates

Stark County frost dates.

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

Data confidence: high · USDA zone: 6a

32°F — light freeze

Last spring frost

10%
05-08
20%
05-03
50%
04-24
80%
04-15
90%
04-10

First fall frost

10%
10-03
20%
10-08
50%
10-17
80%
10-25
90%
10-29

28°F — killing freeze

Last spring freeze

10%
04-29
20%
04-22
50%
04-13
80%
04-04
90%
03-31

First fall freeze

10%
10-14
20%
10-20
50%
10-28
80%
11-04
90%
11-09

Growing season length (days, 28°F threshold)

Short year
168
Median
198
Long year
223

Source NOAA station

KEWANEE 1 E, IL US

11.4 mi · 30 yrs of record (19912020) · 780 ft elev.

Data from KEWANEE 1 E, IL US, 11.4 miles away with 30-year NOAA record (1991-2020).

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