Douglas County, Illinois · Frost dates
Douglas County frost dates.
First-frost, last-frost, and growing-season length for Douglas County, Illinois. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6a
32°F — light freeze
Last spring frost
- 10%
- 05-01
- 20%
- 04-25
- 50%
- 04-15
- 80%
- 04-06
- 90%
- 04-03
First fall frost
- 10%
- 10-07
- 20%
- 10-12
- 50%
- 10-20
- 80%
- 10-28
- 90%
- 11-01
28°F — killing freeze
Last spring freeze
- 10%
- 04-19
- 20%
- 04-13
- 50%
- 04-03
- 80%
- 03-27
- 90%
- 03-19
First fall freeze
- 10%
- 10-18
- 20%
- 10-23
- 50%
- 10-31
- 80%
- 11-08
- 90%
- 11-14
Growing season length (days, 28°F threshold)
- Short year
- 182
- Median
- 211
- Long year
- 240
Source NOAA station
TUSCOLA, IL US
4.1 mi · 30 yrs of record (1991–2020) · 651 ft elev.
Data from TUSCOLA, IL US, 4.1 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
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