Whiteside County, Illinois · Frost dates
Whiteside County frost dates.
First-frost, last-frost, and growing-season length for Whiteside County, Illinois. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6a
32°F — light freeze
Last spring frost
- 10%
- 05-11
- 20%
- 05-06
- 50%
- 04-26
- 80%
- 04-17
- 90%
- 04-13
First fall frost
- 10%
- 09-30
- 20%
- 10-05
- 50%
- 10-13
- 80%
- 10-21
- 90%
- 10-25
28°F — killing freeze
Last spring freeze
- 10%
- 04-30
- 20%
- 04-24
- 50%
- 04-15
- 80%
- 04-05
- 90%
- 04-02
First fall freeze
- 10%
- 10-11
- 20%
- 10-15
- 50%
- 10-23
- 80%
- 10-30
- 90%
- 11-03
Growing season length (days, 28°F threshold)
- Short year
- 164
- Median
- 191
- Long year
- 215
Source NOAA station
MORRISON, IL US
4.2 mi · 30 yrs of record (1991–2020) · 632 ft elev.
Data from MORRISON, IL US, 4.2 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
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