Warren County, Missouri · Frost dates
Warren County frost dates.
First-frost, last-frost, and growing-season length for Warren County, Missouri. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6a
32°F — light freeze
Last spring frost
- 10%
- 05-03
- 20%
- 04-27
- 50%
- 04-14
- 80%
- 04-04
- 90%
- 03-31
First fall frost
- 10%
- 10-09
- 20%
- 10-15
- 50%
- 10-23
- 80%
- 11-01
- 90%
- 11-05
28°F — killing freeze
Last spring freeze
- 10%
- 04-18
- 20%
- 04-12
- 50%
- 04-03
- 80%
- 03-24
- 90%
- 03-17
First fall freeze
- 10%
- 10-20
- 20%
- 10-25
- 50%
- 11-02
- 80%
- 11-12
- 90%
- 11-18
Growing season length (days, 28°F threshold)
- Short year
- 185
- Median
- 213
- Long year
- 246
Source NOAA station
WARRENTON 1 N, MO US
5.1 mi · 30 yrs of record (1991–2020) · 827 ft elev.
Data from WARRENTON 1 N, MO US, 5.1 miles away with 30-year NOAA record (1991-2020).
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