Iron County, Missouri · Frost dates
Iron County frost dates.
First-frost, last-frost, and growing-season length for Iron County, Missouri. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6a
32°F — light freeze
Last spring frost
- 10%
- 04-30
- 20%
- 04-24
- 50%
- 04-13
- 80%
- 04-02
- 90%
- 03-28
First fall frost
- 10%
- 10-06
- 20%
- 10-12
- 50%
- 10-21
- 80%
- 10-29
- 90%
- 11-01
28°F — killing freeze
Last spring freeze
- 10%
- 04-18
- 20%
- 04-10
- 50%
- 04-01
- 80%
- 03-22
- 90%
- 03-15
First fall freeze
- 10%
- 10-17
- 20%
- 10-22
- 50%
- 11-01
- 80%
- 11-09
- 90%
- 11-14
Growing season length (days, 28°F threshold)
- Short year
- 182
- Median
- 214
- Long year
- 244
Source NOAA station
FARMINGTON, MO US
19.6 mi · 30 yrs of record (1991–2020) · 900 ft elev.
Data from FARMINGTON, MO US, 19.6 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
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