Macoupin County, Illinois · Frost dates
Macoupin County frost dates.
First-frost, last-frost, and growing-season length for Macoupin County, Illinois. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6a
32°F — light freeze
Last spring frost
- 10%
- 04-30
- 20%
- 04-24
- 50%
- 04-14
- 80%
- 04-03
- 90%
- 03-31
First fall frost
- 10%
- 10-05
- 20%
- 10-11
- 50%
- 10-21
- 80%
- 10-29
- 90%
- 11-01
28°F — killing freeze
Last spring freeze
- 10%
- 04-17
- 20%
- 04-11
- 50%
- 04-02
- 80%
- 03-23
- 90%
- 03-17
First fall freeze
- 10%
- 10-18
- 20%
- 10-23
- 50%
- 11-01
- 80%
- 11-09
- 90%
- 11-15
Growing season length (days, 28°F threshold)
- Short year
- 184
- Median
- 213
- Long year
- 243
Source NOAA station
CARLINVILLE, IL US
3.4 mi · 30 yrs of record (1991–2020) · 621 ft elev.
Data from CARLINVILLE, IL US, 3.4 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
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