Clark County, Missouri · Frost dates
Clark County frost dates.
First-frost, last-frost, and growing-season length for Clark County, Missouri. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6a
32°F — light freeze
Last spring frost
- 10%
- 05-01
- 20%
- 04-26
- 50%
- 04-17
- 80%
- 04-08
- 90%
- 04-04
First fall frost
- 10%
- 10-10
- 20%
- 10-15
- 50%
- 10-22
- 80%
- 10-31
- 90%
- 11-04
28°F — killing freeze
Last spring freeze
- 10%
- 04-21
- 20%
- 04-16
- 50%
- 04-07
- 80%
- 03-29
- 90%
- 03-22
First fall freeze
- 10%
- 10-20
- 20%
- 10-25
- 50%
- 11-01
- 80%
- 11-10
- 90%
- 11-15
Growing season length (days, 28°F threshold)
- Short year
- 182
- Median
- 208
- Long year
- 238
Source NOAA station
DONNELLSON, IA US
18.6 mi · 30 yrs of record (1991–2020) · 705 ft elev.
Data from DONNELLSON, IA US, 18.6 miles away with 30-year NOAA record (1991-2020).
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