Johnson County, Kansas · Frost dates
Johnson County frost dates.
First-frost, last-frost, and growing-season length for Johnson County, Kansas. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6a
32°F — light freeze
Last spring frost
- 10%
- 04-24
- 20%
- 04-20
- 50%
- 04-10
- 80%
- 04-01
- 90%
- 03-27
First fall frost
- 10%
- 10-13
- 20%
- 10-19
- 50%
- 10-29
- 80%
- 11-06
- 90%
- 11-12
28°F — killing freeze
Last spring freeze
- 10%
- 04-17
- 20%
- 04-10
- 50%
- 03-31
- 80%
- 03-20
- 90%
- 03-13
First fall freeze
- 10%
- 10-23
- 20%
- 10-29
- 50%
- 11-06
- 80%
- 11-17
- 90%
- 11-25
Growing season length (days, 28°F threshold)
- Short year
- 189
- Median
- 220
- Long year
- 257
Source NOAA station
OLATHE 3E, KS US
3.3 mi · 30 yrs of record (1991–2020) · 1055 ft elev.
Data from OLATHE 3E, KS US, 3.3 miles away with 30-year NOAA record (1991-2020).
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