Vermilion County, Illinois · Frost dates
Vermilion County frost dates.
First-frost, last-frost, and growing-season length for Vermilion County, Illinois. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6a
32°F — light freeze
Last spring frost
- 10%
- 05-07
- 20%
- 05-01
- 50%
- 04-21
- 80%
- 04-11
- 90%
- 04-06
First fall frost
- 10%
- 10-06
- 20%
- 10-11
- 50%
- 10-20
- 80%
- 10-29
- 90%
- 11-01
28°F — killing freeze
Last spring freeze
- 10%
- 04-24
- 20%
- 04-19
- 50%
- 04-08
- 80%
- 03-31
- 90%
- 03-25
First fall freeze
- 10%
- 10-17
- 20%
- 10-22
- 50%
- 10-31
- 80%
- 11-08
- 90%
- 11-13
Growing season length (days, 28°F threshold)
- Short year
- 176
- Median
- 206
- Long year
- 233
Source NOAA station
DANVILLE, IL US
5.3 mi · 30 yrs of record (1991–2020) · 555 ft elev.
Data from DANVILLE, IL US, 5.3 miles away with 30-year NOAA record (1991-2020).
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