Jo Daviess County, Illinois · Frost dates
Jo Daviess County frost dates.
First-frost, last-frost, and growing-season length for Jo Daviess County, Illinois. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6a
32°F — light freeze
Last spring frost
- 10%
- 05-17
- 20%
- 05-11
- 50%
- 05-01
- 80%
- 04-22
- 90%
- 04-17
First fall frost
- 10%
- 09-25
- 20%
- 09-29
- 50%
- 10-09
- 80%
- 10-18
- 90%
- 10-23
28°F — killing freeze
Last spring freeze
- 10%
- 05-06
- 20%
- 05-01
- 50%
- 04-20
- 80%
- 04-10
- 90%
- 04-05
First fall freeze
- 10%
- 10-04
- 20%
- 10-10
- 50%
- 10-19
- 80%
- 10-28
- 90%
- 11-01
Growing season length (days, 28°F threshold)
- Short year
- 151
- Median
- 182
- Long year
- 210
Source NOAA station
ELIZABETH, IL US
3.3 mi · 30 yrs of record (1991–2020) · 675 ft elev.
Data from ELIZABETH, IL US, 3.3 miles away with 30-year NOAA record (1991-2020).
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