Douglas County, Oregon · Frost dates

Douglas County frost dates.

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

Data confidence: high · USDA zone: 8b

32°F — light freeze

Last spring frost

10%
04-26
20%
04-18
50%
03-31
80%
03-14
90%
03-05

First fall frost

10%
10-16
20%
10-23
50%
11-05
80%
11-24
90%
12-03

28°F — killing freeze

Last spring freeze

10%
03-31
20%
03-19
50%
02-26
80%
02-01
90%
01-11

First fall freeze

10%
10-29
20%
11-07
50%
12-01
80%
12-25
90%
01-10

Growing season length (days, 28°F threshold)

Short year
212
Median
278
Long year
364

Source NOAA station

WINCHESTER, OR US

10.0 mi · 30 yrs of record (19912020) · 460 ft elev.

Data from WINCHESTER, OR US, 10 miles away with 30-year NOAA record (1991-2020).

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