Cerro Gordo County, Iowa · Frost dates
Cerro Gordo County frost dates.
First-frost, last-frost, and growing-season length for Cerro Gordo County, Iowa. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5a
32°F — light freeze
Last spring frost
- 10%
- 05-15
- 20%
- 05-10
- 50%
- 05-03
- 80%
- 04-24
- 90%
- 04-19
First fall frost
- 10%
- 09-18
- 20%
- 09-23
- 50%
- 10-01
- 80%
- 10-10
- 90%
- 10-15
28°F — killing freeze
Last spring freeze
- 10%
- 05-07
- 20%
- 05-03
- 50%
- 04-24
- 80%
- 04-13
- 90%
- 04-09
First fall freeze
- 10%
- 09-27
- 20%
- 10-01
- 50%
- 10-11
- 80%
- 10-20
- 90%
- 10-23
Growing season length (days, 28°F threshold)
- Short year
- 143
- Median
- 170
- Long year
- 197
Source NOAA station
MASON CITY MUNI AP, IA US
6.7 mi · 30 yrs of record (1991–2020) · 1225 ft elev.
Data from MASON CITY MUNI AP, IA US, 6.7 miles away with 30-year NOAA record (1991-2020).
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