Allamakee County, Iowa · Frost dates
Allamakee County frost dates.
First-frost, last-frost, and growing-season length for Allamakee County, Iowa. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5a
32°F — light freeze
Last spring frost
- 10%
- 05-16
- 20%
- 05-11
- 50%
- 05-02
- 80%
- 04-22
- 90%
- 04-17
First fall frost
- 10%
- 09-28
- 20%
- 10-01
- 50%
- 10-11
- 80%
- 10-20
- 90%
- 10-24
28°F — killing freeze
Last spring freeze
- 10%
- 05-06
- 20%
- 05-01
- 50%
- 04-21
- 80%
- 04-11
- 90%
- 04-06
First fall freeze
- 10%
- 10-07
- 20%
- 10-12
- 50%
- 10-22
- 80%
- 10-30
- 90%
- 11-03
Growing season length (days, 28°F threshold)
- Short year
- 154
- Median
- 184
- Long year
- 211
Source NOAA station
WAUKON, IA US
4.4 mi · 30 yrs of record (1991–2020) · 1275 ft elev.
Data from WAUKON, IA US, 4.4 miles away with 30-year NOAA record (1991-2020).
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