Story County, Iowa · Frost dates
Story County frost dates.
First-frost, last-frost, and growing-season length for Story County, Iowa. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5a
32°F — light freeze
Last spring frost
- 10%
- 05-07
- 20%
- 05-03
- 50%
- 04-24
- 80%
- 04-14
- 90%
- 04-09
First fall frost
- 10%
- 09-28
- 20%
- 10-01
- 50%
- 10-12
- 80%
- 10-21
- 90%
- 10-26
28°F — killing freeze
Last spring freeze
- 10%
- 04-29
- 20%
- 04-24
- 50%
- 04-14
- 80%
- 04-05
- 90%
- 04-01
First fall freeze
- 10%
- 10-09
- 20%
- 10-14
- 50%
- 10-23
- 80%
- 10-31
- 90%
- 11-04
Growing season length (days, 28°F threshold)
- Short year
- 163
- Median
- 192
- Long year
- 217
Source NOAA station
COLO, IA US
7.7 mi · 30 yrs of record (1991–2020) · 1000 ft elev.
Data from COLO, IA US, 7.7 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
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