Perry County, Illinois · Frost dates
Perry County frost dates.
First-frost, last-frost, and growing-season length for Perry County, Illinois. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6a
32°F — light freeze
Last spring frost
- 10%
- 04-22
- 20%
- 04-17
- 50%
- 04-06
- 80%
- 03-29
- 90%
- 03-23
First fall frost
- 10%
- 10-09
- 20%
- 10-14
- 50%
- 10-22
- 80%
- 11-01
- 90%
- 11-05
28°F — killing freeze
Last spring freeze
- 10%
- 04-11
- 20%
- 04-06
- 50%
- 03-27
- 80%
- 03-16
- 90%
- 03-10
First fall freeze
- 10%
- 10-21
- 20%
- 10-25
- 50%
- 11-02
- 80%
- 11-13
- 90%
- 11-18
Growing season length (days, 28°F threshold)
- Short year
- 193
- Median
- 220
- Long year
- 253
Source NOAA station
DU QUOIN 4 SE, IL US
11.6 mi · 30 yrs of record (1991–2020) · 420 ft elev.
Data from DU QUOIN 4 SE, IL US, 11.6 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
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