Logan County, Illinois · Frost dates

Logan County frost dates.

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

Data confidence: high · USDA zone: 6a

32°F — light freeze

Last spring frost

10%
05-04
20%
04-30
50%
04-20
80%
04-09
90%
04-05

First fall frost

10%
10-03
20%
10-07
50%
10-16
80%
10-24
90%
10-29

28°F — killing freeze

Last spring freeze

10%
04-24
20%
04-19
50%
04-07
80%
03-30
90%
03-23

First fall freeze

10%
10-12
20%
10-18
50%
10-26
80%
11-03
90%
11-09

Growing season length (days, 28°F threshold)

Short year
171
Median
202
Long year
231

Source NOAA station

LINCOLN, IL US

2.1 mi · 30 yrs of record (19912020) · 583 ft elev.

Data from LINCOLN, IL US, 2.1 miles away with 30-year NOAA record (1991-2020).

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