Franklin County, Washington · Frost dates
Franklin County frost dates.
First-frost, last-frost, and growing-season length for Franklin County, Washington. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 8b
32°F — light freeze
Last spring frost
- 10%
- 05-15
- 20%
- 05-10
- 50%
- 04-30
- 80%
- 04-19
- 90%
- 04-12
First fall frost
- 10%
- 09-29
- 20%
- 10-03
- 50%
- 10-12
- 80%
- 10-21
- 90%
- 10-26
28°F — killing freeze
Last spring freeze
- 10%
- 05-01
- 20%
- 04-26
- 50%
- 04-10
- 80%
- 03-29
- 90%
- 03-20
First fall freeze
- 10%
- 10-08
- 20%
- 10-14
- 50%
- 10-24
- 80%
- 11-03
- 90%
- 11-10
Growing season length (days, 28°F threshold)
- Short year
- 160
- Median
- 197
- Long year
- 235
Source NOAA station
CONNELL 1 W, WA US
8.8 mi · 30 yrs of record (1991–2020) · 1020 ft elev.
Data from CONNELL 1 W, WA US, 8.8 miles away with 30-year NOAA record (1991-2020).
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