Warren County, Illinois · Frost dates
Warren County frost dates.
First-frost, last-frost, and growing-season length for Warren County, Illinois. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6a
32°F — light freeze
Last spring frost
- 10%
- 05-10
- 20%
- 05-03
- 50%
- 04-22
- 80%
- 04-13
- 90%
- 04-09
First fall frost
- 10%
- 09-29
- 20%
- 10-05
- 50%
- 10-15
- 80%
- 10-24
- 90%
- 10-27
28°F — killing freeze
Last spring freeze
- 10%
- 04-28
- 20%
- 04-22
- 50%
- 04-11
- 80%
- 04-03
- 90%
- 03-30
First fall freeze
- 10%
- 10-11
- 20%
- 10-17
- 50%
- 10-25
- 80%
- 11-02
- 90%
- 11-07
Growing season length (days, 28°F threshold)
- Short year
- 166
- Median
- 197
- Long year
- 222
Source NOAA station
MONMOUTH, IL US
6.5 mi · 30 yrs of record (1991–2020) · 720 ft elev.
Data from MONMOUTH, IL US, 6.5 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
14-day free trial. No credit card. Cancel anytime.