Madison County, Illinois · Frost dates
Madison County frost dates.
First-frost, last-frost, and growing-season length for Madison County, Illinois. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6a
32°F — light freeze
Last spring frost
- 10%
- 04-19
- 20%
- 04-13
- 50%
- 04-04
- 80%
- 03-25
- 90%
- 03-18
First fall frost
- 10%
- 10-25
- 20%
- 10-29
- 50%
- 11-05
- 80%
- 11-15
- 90%
- 11-21
28°F — killing freeze
Last spring freeze
- 10%
- 04-09
- 20%
- 04-04
- 50%
- 03-25
- 80%
- 03-13
- 90%
- 03-06
First fall freeze
- 10%
- 11-02
- 20%
- 11-06
- 50%
- 11-16
- 80%
- 11-27
- 90%
- 12-01
Growing season length (days, 28°F threshold)
- Short year
- 207
- Median
- 236
- Long year
- 270
Source NOAA station
ALTON - MELVIN PRICE L&D, IL US
13.7 mi · 30 yrs of record (1991–2020) · 405 ft elev.
Data from ALTON - MELVIN PRICE L&D, IL US, 13.7 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
14-day free trial. No credit card. Cancel anytime.