Skagit County, Washington · Frost dates

Skagit County frost dates.

First-frost, last-frost, and growing-season length for Skagit County, Washington. Sourced from NOAA 1991-2020 Climate Normals.

Data confidence: high · USDA zone: 8b

32°F — light freeze

Last spring frost

10%
04-19
20%
04-10
50%
03-28
80%
03-13
90%
03-07

First fall frost

10%
10-23
20%
10-31
50%
11-14
80%
11-27
90%
12-04

28°F — killing freeze

Last spring freeze

10%
03-20
20%
03-11
50%
02-25
80%
02-04
90%
01-19

First fall freeze

10%
11-10
20%
11-16
50%
12-02
80%
12-21
90%
01-03

Growing season length (days, 28°F threshold)

Short year
235
Median
280
Long year
349

Source NOAA station

CONCRETE PPL FISH STN, WA US

4.6 mi · 30 yrs of record (19912020) · 195 ft elev.

Data from CONCRETE PPL FISH STN, WA US, 4.6 miles away with 30-year NOAA record (1991-2020).

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