Adams County, Iowa · Frost dates
Adams County frost dates.
First-frost, last-frost, and growing-season length for Adams County, Iowa. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5a
32°F — light freeze
Last spring frost
- 10%
- 05-11
- 20%
- 05-06
- 50%
- 04-27
- 80%
- 04-17
- 90%
- 04-13
First fall frost
- 10%
- 09-26
- 20%
- 10-01
- 50%
- 10-12
- 80%
- 10-22
- 90%
- 10-26
28°F — killing freeze
Last spring freeze
- 10%
- 05-01
- 20%
- 04-26
- 50%
- 04-16
- 80%
- 04-07
- 90%
- 04-02
First fall freeze
- 10%
- 10-04
- 20%
- 10-12
- 50%
- 10-23
- 80%
- 11-01
- 90%
- 11-05
Growing season length (days, 28°F threshold)
- Short year
- 156
- Median
- 190
- Long year
- 217
Source NOAA station
CORNING, IA US
4.0 mi · 30 yrs of record (1991–2020) · 1190 ft elev.
Data from CORNING, IA US, 4 miles away with 30-year NOAA record (1991-2020).
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